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Card Bug Severity Read More
Wall of Roots The mana abilities of Wall of Roots and Kozilek's Translator cannot be activated while paying the mana cost of a spell or ability. Players can still activate these abilities at any time that player has priority. Disadvantageous
Tempt with Discovery Tempt with Discovery only fetches you one land Disadvantageous
Mutiny Mutiny doesn't have clear targeting information. Workaround: the game log displays targets matching the order written on the card, and will highlight the appropriate creature when its name is hovered over with the mouse. Graphical
Kess, Dissident Mage Kess, Dissident Mage has issues with casting spells through alternative methods. Unclassified
Scheming Symmetry Players do not have to select a card when Scheming Symmetry is cast, but they will still shuffle their library. Unclassified
Relic Crush Relic Crush can target the same permanent twice. Advantageous
Turn // Burn Fuse cards such as Turn // Burn have a visual error when granted other abilities. Graphical
Infernal Darkness Infernal Darkness remembers the life loss payment for future mana payments Disadvantageous
Volcano Hellion Volcano Hellion's damage is capped at 255 Disadvantageous
First Response First Response does not trigger from self-inflicted life-loss Disadvantageous
Lavinia, Azorius Renegade Copying an opponent's Lavinia, Azorius Renegade can cause the game to restart in specific instances. Unclassified
Ugin, the Spirit Dragon Ugin, the Spirit Dragon interacts incorrectly with tokens that exile permanents. Unclassified
City of Brass Drain Power does not function correctly when the targeted player controls City of Brass. Unclassified
Desolate Lighthouse Dredging using Desolate Lighthouse's ability while empty-handed lets the player avoid discarding Advantageous
Vivien, Champion of the Wilds If Vivien, Champion of the Wilds exiles a creature with flash, it incorrectly also displays that it has flash in blue text. Graphical
Semblance Anvil Semblance Anvil does not function when a split card is imprinted. Disadvantageous
Peregrination This spell fails to display the destination zones of the chosen lands in the game log. Graphical
Siphon Insight Siphon Insight makes the targeted player skip their next draw step Advantageous
Snake Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Drain Power Drain Power does not function correctly when the targeted player controls City of Brass. Unclassified
Fire // Ice Electrodominance is incorrectly unable to cast either side of split cards such as Fire // Ice when X equals 2. Unclassified
Solemnity Solemnity does not prevent a player from paying tribute cost, but the creature won't get the +1/+1 counter Advantageous
Choice of Damnations Choice of Damnations lets opponent choose whether to sacrifice or lose life Disadvantageous
Verdeloth the Ancient "Kicker {X}" costs do not allow you to spend mana on them correctly. Disadvantageous
Myr Servitor If Lazav, Multifarious is a copy of another creature that references other copies of itself such as Myr Servitor, it will incorrectly refer to other copies of Lazav. Unclassified
Entreat the Angels When Entreat the Angels is on the stack with 0 chosen for X, the blue text that typically indicates the value of X does not appear. Graphical
Amoeboid Changeling Removing all creature types from a creature is displayed as if only the two leftmost creature types were removed Graphical
Gallia of the Endless Dance Gallia of the Endless Dance draws two cards when you trigger it's ability when empty-handed Advantageous
Shirei, Shizo's Caretaker If control of Grave Betrayal or Shirei, Shizo's Caretaker changes between a creature dying and the delayed EOT trigger going on the stack, the new controller gets the creature rather than the player who created the delayed trigger. Disadvantageous
Clone Players are prompted to choose the replacement effect of cards such as Clone during the resolution of Show and Tell. Unclassified
Clone Exhume doesn't allow you to pick targets for Clones. Avoidable Game Breaking
Astral Drift Astral Drift doesn't trigger when cycled Disadvantageous
Mammoth Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Caller of the Pack Myriad token(s) don't get exiled at the end of combat Advantageous
Gaea's Blessing Gaea's Blessing doesn't shuffle opponent's library if no cards in their graveyard are targeted Disadvantageous
Careful Consideration Copy spells that care about being cast during a main phase such as Careful Consideration sometimes do not confer the main phase bonus. Unclassified
Deranged Assistant Ctrl+Z two Deranged Assistants can soft-lock the game Avoidable Game Breaking
Tomorrow, Azami's Familiar Tomorrow, Azami's Familiar puts both unchosen cards back on top of the library. Disadvantageous
Banshee of the Dread Choir Myriad token(s) don't get exiled at the end of combat Advantageous
Bruna, the Fading Light Brisela, Voice of Nightmares incorrectly has a converted mana cost of 13. Unclassified
Bonecrusher Giant The "can't gain life" or "damage can't be prevented" effect doesn't appear in the Effect zone after the spell/ability resolves. Graphical
Grafdigger's Cage If you manifest a creature with Grafdigger's Cage in play, it will be exiled. Disadvantageous
Grafdigger's Cage Grafdigger's Cage and Weathered Runestone don't prevent cards from entering the battlefield from the library if the cards are revealed from the top. Disadvantageous
Grafdigger's Cage Grafdigger's Cage does not stop Oath of Druids from putting creatures on the battlefield Disadvantageous
Grafdigger's Cage With Grafdigger's Cage on the battlefield, the trigger of Matter Reshaper does not put the card into your hand. Unclassified
Academy Manufactor Some cards with replacement effects can replace card draw when a card with Dredge is in the graveyard with various consequences Avoidable Game Breaking
Curse of Leeches Curse of Leeches dies when it transforms into the front side. Disadvantageous
Diabolic Servitude Diabolic Servitude's second ability does not function. (When the creature put onto the battlefield with Diabolic Servitude dies, exile it and return Diabolic Servitude to its owner’s hand.) Disadvantageous
Fork in the Road This spell fails to display the destination zones of the chosen lands in the game log. Graphical
Goblin Electromancer With two copies of Goblin Electromancer in play, splice costs are incorrectly calculated. Unclassified
Last Rites Last Rites has graphical bug Graphical
Vesuvan Shapeshifter Exhume doesn't allow you to pick targets for Clones. Avoidable Game Breaking
Bala Ged Thief When only some cards from an opponent's hand are revealed, they do not appear in the revealed zone Graphical
Phytotitan Phytotitan returns to the battlefield under it's controller's control, rather than its owner's control. Disadvantageous
Grixis Sojourners Sojourners cycle from Alara don't trigger its own triggered ability when cycled Disadvantageous
Rags // Riches If a commander is chosen for Riches in Rags // Riches, no other opponents need to choose a creature. Disadvantageous
Retribution of the Ancients Retribution of the Ancients doesn't allow you to activate it when you have no creatures with +1/+1 counters. Disadvantageous
Channel Casting or copying Channel on your opponent's turn lets you use the emblem on your next turn. Advantageous
Mirror Match Non-creature permanents that become creatures temporarily are incorrectly considered blocked by the token copies Advantageous
Jace, the Mind Sculptor Some cards don't reflect the player choices correctly in chat log Graphical
Mindclaw Shaman You are unable to cast split cards with Mindclaw Shaman's ability. Disadvantageous
Dire-Strain Rampage Targeting an indestructible land with Dire-Strain Rampage allows the controller of the land to search for two lands. Advantageous
Compulsive Research Dredging rather than drawing can let you avoid discarding in a specific case Advantageous
As Foretold As Foretold does not apply to cards able to be cast due to permission granted by other cards, such as Abandoned Sarcophagus and Harness the Storm Disadvantageous
Weathered Runestone Second Sunrise bringing back a Weathered Runestone will fail to return things below Weathered Runestone in the graveyard. Advantageous
Weathered Runestone Grafdigger's Cage and Weathered Runestone don't prevent cards from entering the battlefield from the library if the cards are revealed from the top. Disadvantageous
Lazav, the Multifarious If Lazav, Multifarious is a copy of another creature that references other copies of itself such as Myr Servitor, it will incorrectly refer to other copies of Lazav. Unclassified
Omen Machine Teferi, Mage of Zhalfir incorrectly allows opponents to cast spells with Omen Machine. Disadvantageous
Omen Machine Omen Machine forces previously exiled spells to be used when a target becomes available Advantageous
Kodama's Reach This spell fails to display the destination zones of the chosen lands in the game log. Graphical
Fireball Fireball cannot be cast with 0 targets when X = 0. Disadvantageous
Umori, the Collector The deckbuilder incorrectly shows that is Umori ineligible to be the companion for a Tribal-type deck. Graphical
Windbrisk Heights Cards exiled by the triggered abilities of a number of cards which exile a card from their controller's library appear to be coming from the opponent's library instead. This affects cards such as Bomat Courier, Windbrisk Heights, and other similar cards. This is a display issue only. Unclassified
Umbral Mantle When you untap a mana-producing creature as part of cost to activate an ability, MTGO wrongly allows you to tap that creature for mana in the middle of paying the cost Advantageous
Mogg Assassin Mogg Assassin doesn't kill the opponent's creature on a won flip and doesn't always let both players select a target Disadvantageous
Ulamog, the Ceaseless Hunger Cards that are exiled by Ulamog, the Ceaseless Hunger incorrectly show association arrows while in the Exiled Zone. Graphical
Blood Clock Blood Clock and Umbilicus don't let you return permanent to hand Advantageous
Barren Glory Barren Glory does not check intervening if clause during resolution Advantageous
Runed Halo Runed Halo do not prevent damage from tokens with the same name as card named with it Disadvantageous
Bloodlord of Vaasgoth Bloodlord of Vaasgoth does not display the blue text it grants other vampires. Graphical
Graveshifter Harmonic Prodigy causes Changelings to trigger three times. Advantageous
Snapcaster Mage Splits cards can't gain flashback. Disadvantageous
Atarka's Command The "can't gain life" or "damage can't be prevented" effect doesn't appear in the Effect zone after the spell/ability resolves. Graphical
Vengeful Pharaoh Vengeful Pharaoh mistakes opponents for you and you for opponents Disadvantageous
Wolfbitten Captive If Heir to Falkenrath, Ecstatic Awakener, or Wolfbitten Captive activate their ability, then transform and transform back to the front side in some way, their ability can be activated again in the same turn. Advantageous
Scythe of the Wretched Unscythe, Killer of Kings and Scythe of the Wretched trigger when unequipped, bringing any dead creatures back Advantageous
Distant Memories Distant Memories lock the game at opponent's priority Game Breaking
Watcher for Tomorrow Watcher for Tomorrow's reminder text in the game log implies it is a land (Hideaway ability) Graphical
Tromokratis Tromokratis can cause the game the game to soft-lock in multiplayer games Game Breaking
Vedalken Shackles Vedalken Shackles interacts incorrectly with creatures that enter the battlefield tapped and attacking. Unclassified
Zoetic Cavern City of Traitors triggers by casting Zoetic Cavern as a Morph creature Disadvantageous
Smallpox The client incorrectly display that you may choose to discard either the Adventure or the creature side of an Adventure card Advantageous
Vedalken Orrery Chainer, Nightmare Adept can't cast cards using its ability during opponents turn when Vedalken Orrery is also in play. Disadvantageous
Kalitas, Traitor of Ghet If you control Kalitas, Traitor of Ghet, you create a zombie creature token when a creature you control owned by an opponent dies. Unclassified
Buried Alive The order of cards put into the graveyard by Buried Alive is random Disadvantageous
Adeline, Resplendent Cathar When Adeline, Resplendent Cathar's ability creates tokens, those tokens can't enter attacking a planeswalker Disadvantageous
The Mirari Conjecture Premium versions of Sagas such as The Mirari Conjecture have some incorrect art assets. Unclassified
Harmonic Prodigy Shaman of the Great Hunt only puts one counter on creatures with Harmonic Prodigy in play Disadvantageous
Harmonic Prodigy Harmonic Prodigy causes Changelings to trigger three times. Advantageous
Teferi, Mage of Zhalfir Teferi, Mage of Zhalfir incorrectly allows opponents to cast spells with Omen Machine. Disadvantageous
Sword-Point Diplomacy Sword-Point Diplomacy is buggy in multiplayer Advantageous
Commander's Plate Commander's Plate gives protection from all colors outside of Commander. Advantageous
Irregular Cohort Harmonic Prodigy causes Changelings to trigger three times. Advantageous
Show and Tell Players are prompted to choose the replacement effect of cards such as Clone during the resolution of Show and Tell. Unclassified
Stinkweed Imp Creatures with an ability that destroys creatures that they deal combat damage to ignore Phasing. Advantageous
Naya Sojourners Sojourners cycle from Alara don't trigger its own triggered ability when cycled Disadvantageous
Metallic Mimic If Metallic Mimic and a creature of the chosen type enter the battlefield at the same time, the system will incorrectly give that creature a +1/+1 counter Advantageous
Release the Ants If a player has no cards left in their library, both players will lose a clash from cards such as Release the Ants. Unclassified
Willow Geist Willow Geist's ability triggers for each card removed from your graveyard, instead of triggering once per time cards are removed from your graveyard. Advantageous
Gideon Jura Certain effect shields, such as the indestructible one created by Gideon Jura, sometimes display slightly longer than they should. Unclassified
Deathmist Raptor Deathmist Raptor doesn't trigger when it's discarded to pay the morph cost of a creature Disadvantageous
Sheltering Ancient Sheltering Ancient's cumulative upkeep won't put the +1/+1 counter on a creature that already have +1/+1 counter, but you can still choose them Advantageous
Nullstone Gargoyle Nullstone Gargoyle counters all noncreature spells cast Advantageous
Animar, Soul of Elements Animar, Soul of Elements can cause slowdown with an excessive amount of counters on it. Unclassified
Mystical Dispute Cards such as Mystical Dispute are not respected fully by the "No possible play: Yield all" keybinding. Unclassified
Sphinx of Uthuun Sphinx of Uthuun's trigger does not allow you to order the cards going into your graveyard Disadvantageous
Nebuchadnezzar Nebuchadnezzar ability makes the game start endlessly repeating itself Game Breaking
Nahiri's Wrath The prompt box for the additional cost of Nahiri's Wrath contains a grammatical error when selecting a single target. Graphical
Mana Reflection Mana Reflection doesn't double mana produced by mana abilities that provide mana in any combination of colors Disadvantageous
Realmwalker Realmwalker allows you to see the top card of your deck before you choose a creature type. Advantageous
Hellspark Elemental Conceding the game during the cleanup step after having activated Unearth will restart the game. Avoidable Game Breaking
Elderscale Wurm Elderscale Wurm doesn't work if you are above 7 life Disadvantageous
Bear Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Holistic Wisdom Holistic Wisdom restarts the game when you activate it Game Breaking
Portent Some cards don't reflect the player choices correctly in chat log Graphical
Young Pyromancer Tokens created by Young Pyromancer have wrong text Graphical
Porphyry Nodes Porphyry Nodes allows a creature to regenerate if it's tied for the least power. Disadvantageous
Spell Crumple There are known issues with giving flashback to a spell that is put on the bottom of a library as it resolves. Unclassified
Fiery Justice Fiery Justice doesn't give the opponent life Advantageous
Yidaro, Wandering Monster Yidaro, Wandering Monster's reanimation ability does not function Disadvantageous
Pithing Needle Avatars are incorrectly on the list of cards you can name with cards such as Pithing Needle. Unclassified
Shatterskull Smashing Shatterskull Smashing ignores Reidane when calculating cost Advantageous
Thieving Sprite When only some cards from an opponent's hand are revealed, they do not appear in the revealed zone Graphical
Karn Liberated Restarting the game with Karn Liberated does not remove the City's Blessing. Unclassified
Karn Liberated If Karn Liberated restarts the game, its controller draws a card on their first turn. Advantageous
Conspiracy Theorist Conspiracy Theorist can exile cards with madness and then they can be played until end of the turn Advantageous
Compost Compost isn't triggered when an opponent only casts the nonblack half of a split card. Disadvantageous
Daretti, Ingenious Iconoclast Daretti, Ingenious Iconoclast creates tokens with the wrong card image Graphical
Reflecting Pool Reflecting Pool does not get the ability to add any color of mana to your mana pool from Crumbling Vestige. Disadvantageous
Island Sanctuary Island Sanctuary's replacement effect is available if you draw a card during an opponents draw step Advantageous
Sorin, Lord of Innistrad If Sorin, Lord of Innistrad somehow becomes a creature, he cannot target himself with his ultimate ability. Unclassified
Collected Company Collected Company does not allow you to put fewer than the maximum number of creatures onto the battlefield. Disadvantageous
Szadek, Lord of Secrets Szadek, Lord of Secrets won't deal any damage at all nor get its replacement effect when a "Damage can't be prevented" ability is active Disadvantageous
Orcish Spy Orcish Spy and cards with similar abilities show the cards in alphabetical order, not the actual order Disadvantageous
Umbilicus Blood Clock and Umbilicus don't let you return permanent to hand Advantageous
Agitator Ant Agitator Ant gives itself 4 +1 counters Advantageous
Brothers Yamazaki If one player controls two Brothers Yamazaki, and another player controls one, the "legend rule" continues to not apply. Unclassified
Storage Matrix Selecting yes to anything other than artifacts with two Storage Matrix in play causes the game to soft lock. Avoidable Game Breaking
Masked Vandal Harmonic Prodigy causes Changelings to trigger three times. Advantageous
Ethersworn Canonist Ethersworn Canonist does not prevent morphs from being cast Advantageous
Fire Covenant If Fire Covenant is cast for x=0 and you pay the 1 extra mana that MTGO asks you to (which is the bug), the game will restarts. Workaround: Undo the process if you encounter this bug, and never cast it for x=0 Avoidable Game Breaking
Eel Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Dream Halls Dream Halls does not function correctly with modal spells such as Mystic Confluence. Unclassified
Cultivate This spell fails to display the destination zones of the chosen lands in the game log. Graphical
Rogue Skycaptain Rogue Skycaptain's upkeep cost is always {2}. Advantageous
Reidane, God of the Worthy Shatterskull Smashing ignores Reidane when calculating cost Advantageous
Spider Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Swirl the Mists Swirl the Mists will randomly restart the game Game Breaking
Student of Warfare If a level-up card would gain an ability that it would through leveling, it won't show it has gained that ability. Graphical
Nazahn, Revered Bladesmith Nazahn, Revered Bladesmith will sometimes give the equipment it finds to another player's hand. Disadvantageous
Recoup Splits cards can't gain flashback. Disadvantageous
Estrid, the Masked Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Mystic Confluence Dream Halls does not function correctly with modal spells such as Mystic Confluence. Unclassified
Retriever Phoenix Some cards with replacement effects can replace card draw when a card with Dredge is in the graveyard with various consequences Avoidable Game Breaking
Rosheen Meanderer Rosheen Meanderer is unable to contribute mana to spells that ask an opponent to pay X, such as Condescend. Disadvantageous
Myriad Construct When Myriad Construct is the only legal target of a storm card, it only produces tokens once, no matter how many times it is targeted. Disadvantageous
Phyrexian Metamorph Exhume doesn't allow you to pick targets for Clones. Avoidable Game Breaking
Rotting Rats The client incorrectly display that you may choose to discard either the Adventure or the creature side of an Adventure card Advantageous
Matter Reshaper With Grafdigger's Cage on the battlefield, the trigger of Matter Reshaper does not put the card into your hand. Unclassified
Riders of Gavony Riders of Gavony gives protection to all permanents. Advantageous
Meteor Storm Meteor Storm only discards one card Advantageous
Goblin Game Goblin Game reveals your chosen number before your opponents choose. Disadvantageous
Sacred Ground Sacred Ground triggers regardless of if the opponent causes the lands to enter the graveyard. Advantageous
Sibsig Icebreakers The client incorrectly display that you may choose to discard either the Adventure or the creature side of an Adventure card Advantageous
Vizier of Many Faces Exhume doesn't allow you to pick targets for Clones. Avoidable Game Breaking
Kaya, Ghost Assassin If Kaya, Ghost Assassin exiles a commander with the first ability, and its controller chooses not to replace exile with the command zone, the commander will still go to the command zone until Kaya returns it. Unconfirmed
Multani's Presence Multani's Presence incorrectly draws cards off copies of spells that are countered Advantageous
Multani's Presence Multani's presence also draws cards when a spell does not resolve because there is no more valid target. Advantageous
Knowledge Pool With multiple Knowledge Pools in play, casting a spell from hand lets you cast a spell from each Pool. Advantageous
Knowledge Pool Knowledge Pool doesn't let you cast spells exiled under it unless you have an untapped mana source. Advantageous
Webweaver Changeling Harmonic Prodigy causes Changelings to trigger three times. Advantageous
Cairn Wanderer Instead of looking at GY, Cairn Wanderer looking at creatures on battlefield Advantageous
Drake Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Indrik Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Grenzo, Dungeon Warden Grenzo, Dungeon Warden's ability can put cards such as Progenitus; that have a replacement effect preventing them from being in graveyards; onto the battlefield. Advantageous
Crab Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Ashiok's Erasure Ashiok's Erasure and Ixalan's Binding don't prevent the opponent from casting copies of the spells they've exiled. Disadvantageous
Miasmic Mummy The client incorrectly display that you may choose to discard either the Adventure or the creature side of an Adventure card Advantageous
Overabundance Overabundance can't add the additional colorless mana, therefore keeping players from tapping lands for colorless mana Advantageous
Riptide Replicator Riptide Replicator tokens use incorrect art and incorrectly display they have the changeling ability. Graphical
Exhume Exhume doesn't allow you to pick targets for Clones. Avoidable Game Breaking
Bomat Courier Cards exiled by the triggered abilities of a number of cards which exile a card from their controller's library appear to be coming from the opponent's library instead. This affects cards such as Bomat Courier, Windbrisk Heights, and other similar cards. This is a display issue only. Unclassified
Mystic Forge Mystic Forge does not allow casting Zoetic Cavern as a Morph creature from the top of your library Disadvantageous
Skull Raid Skull raid draws cards if the discarded cards go to the battlefield Advantageous
Academic Dispute If you choose not to give targeted creature reach with Academic Dispute, you do not learn Disadvantageous
Battlefield Thaumaturge Battlefield Thaumaturge wrongly handle how much discount a spell get if it being targeted more than once by that spell Advantageous
Grave Betrayal If Grave Betrayal changes owners with its trigger on the stack, the new controller incorrectly becomes the owner of the trigger. Unclassified
Grave Betrayal If control of Grave Betrayal or Shirei, Shizo's Caretaker changes between a creature dying and the delayed EOT trigger going on the stack, the new controller gets the creature rather than the player who created the delayed trigger. Disadvantageous
Wormfang Turtle Wormfang Newt/Turtle returns MDFCs on their land side, rather than their front side. Disadvantageous
Crovax the Cursed Crovax The Cursed loses old counters after sacrifice Disadvantageous
Evershrike If you activate Evershrike's ability multiple times before having it get reanimated, each trigger will let you attach an aura. Advantageous
Warchief Giant Myriad token(s) don't get exiled at the end of combat Advantageous
Patchwork Crawler Patchwork Crawler doesn't have the activated abilities of cards it exiles. Disadvantageous
Boar Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Concerted Effort Some protection abilities granted by Concerted Effort are not shown visually on creatures Graphical
Kiora, Master of the Depths Kiora, Master of the Depths incorrectly allows taking MDFCs where one side is a land, and does not count it toward the total taken Advantageous
City of Traitors Opponents playing lands owned by the controller of City of Traitors will incorrectly trigger it. Unclassified
Hopeful Eidolon Bestowed auras remain on creaturelands Advantageous
Oath of Druids Grafdigger's Cage does not stop Oath of Druids from putting creatures on the battlefield Disadvantageous
Stolen Identity When a player casts a spell with cipher such as Stolen Identity, the caster incorrect gains priority before it finishes resolving. Unclassified
Second Sunrise Second Sunrise bringing back a Weathered Runestone will fail to return things below Weathered Runestone in the graveyard. Advantageous
Angelic Field Marshal Angelic Field Marshal still grants a bonus to your commander when an opponent gains control of it. Advantageous
Coralhelm Commander If a level-up card would gain an ability that it would through leveling, it won't show it has gained that ability. Graphical
Zur's Weirding Zur's Weirding forces dredging to occur. Advantageous
Pia's Revolution Pia's Revolution creates an incorrect prompt while also being nonfunctional. Disadvantageous
Cut // Ribbons Split cards such as Cut // Ribbons are reported as 3 cards in the chat log. Graphical
Shifty Doppelganger Shifty Doppelganger puts an "ability" onto the battlefield at end of turn, rather than itself. Game Breaking
Mephitic Ooze Creatures with an ability that destroys creatures that they deal combat damage to ignore Phasing. Advantageous
Gauntlets of Chaos Gauntlets of Chaos allows you to target illegal targets. Unclassified
Wilderness Reclamation If No Possible Play: Yield All is set (F8) when an ability untaps all lands a player controls such as Wilderness Reclamation, one of the lands may be visually tapped, however, it can still be tapped. Unclassified
Mind Bend Cards that ask you to choose "a basic land type or a color word" only let you choose a basic land type. Disadvantageous
Mind Bend Cards that replace a basic land type with another, only change the type of the land but not the mana produced Disadvantageous
Ulamog's Despoiler Creatures entering the battlefield as a copy of Ulamog's Despoiler do not trigger its ability. Disadvantageous
Blade of Selves Myriad token(s) don't get exiled at the end of combat Advantageous
Ever After There are known issues with giving flashback to a spell that is put on the bottom of a library as it resolves. Unclassified
Herald of the Host Myriad token(s) don't get exiled at the end of combat Advantageous
Enduring Renewal Enduring Renewal prevents losing to decking Advantageous
Primal Amulet If you cast a card you don't own with Primal Wellspring, the copy is cast by the card's owner. Disadvantageous
Strongarm Tactics The client incorrectly display that you may choose to discard either the Adventure or the creature side of an Adventure card Advantageous
Guardian Gladewalker Harmonic Prodigy causes Changelings to trigger three times. Advantageous
Containment Priest If Containment Priest and any other creatures (not cast) ETB at the same time, all the other creatures get exiled Disadvantageous
Containment Priest Containment Priest exiles Theros Gods even when their devotion isn't met. Advantageous
Mindblaze Mindblaze allows you to choose zero Advantageous
Necra Sanctuary Necra Sanctuary does not cause a player to lose 3 life if you control both a green and white permanent. Disadvantageous
Electrodominance Electrodominance is incorrectly unable to cast either side of split cards such as Fire // Ice when X equals 2. Unclassified
Pollen Lullaby Pollen Lullaby does not display the rules text stating that the creature doesn't untap. Graphical
Earsplitting Rats The client incorrectly display that you may choose to discard either the Adventure or the creature side of an Adventure card Advantageous
Stigma Lasher The "can't gain life" or "damage can't be prevented" effect doesn't appear in the Effect zone after the spell/ability resolves. Graphical
Svella, Ice Shaper Svella, Ice Shaper's second ability shows incorrect text (but works correctly) Graphical
Ixalan's Binding Ashiok's Erasure and Ixalan's Binding don't prevent the opponent from casting copies of the spells they've exiled. Disadvantageous
Stronghold Rats The client incorrectly display that you may choose to discard either the Adventure or the creature side of an Adventure card Advantageous
Chainer, Nightmare Adept Chainer, Nightmare Adept can't cast cards using its ability during opponents turn when Vedalken Orrery is also in play. Disadvantageous
Illusionary Mask Illusionary Mask doesn't function. Disadvantageous
Battle for Bretagard Battle for Bretagard doesn't let you choose different tokens that share certain creature types. Disadvantageous
Heir of Falkenrath If Heir to Falkenrath, Ecstatic Awakener, or Wolfbitten Captive activate their ability, then transform and transform back to the front side in some way, their ability can be activated again in the same turn. Advantageous
Alter Reality When you change the color in a card's text, the card won't show the new chosen color in the cards itself, in the tooltip, and not in the zoomed version Disadvantageous
Seasons Past There are known issues with giving flashback to a spell that is put on the bottom of a library as it resolves. Unclassified
Treefolk Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Zhur-Taa Druid Zhur-Taa Druid does not deal damage when tapped for its ability Advantageous
Wild Slash The "can't gain life" or "damage can't be prevented" effect doesn't appear in the Effect zone after the spell/ability resolves. Graphical
Guardian Project Guardian Project does not draw a card if a face-down permanent (e.g. Morph) enters the battlefield if another is already in play. Disadvantageous
Phyrexian Revoker If a card is manifested and would normally require a choice as it enters the battlefield, it incorrectly prompts you for that choice Advantageous
Rayami, First of the Fallen Rayami, First of the Fallen can restart the game in certain situations when other creatures die. Unclassified
Overwhelming Splendor Creatures with ascend can still grant the City's Blessing with Overwhelming Splendor on the battlefield. Disadvantageous
Kunoros, Hound of Athreos Kunoros's static ability prevents cards below it in the graveyard from entering the battlefield when reanimated together. Disadvantageous
Grotesque Hybrid Creatures with an ability that destroys creatures that they deal combat damage to ignore Phasing. Advantageous
Gideon's Intervention Casting a second copy of Gideon's Intervention causes the first to allow the named card to deal damage. Disadvantageous
Architects of Will Architects of Will allows the targeted player to rearrange the top of their deck, rather than the player who cast it Disadvantageous
Charmed Pendant Charmed Pendant's ability doesn't add mana to mana pool Disadvantageous
Pox The calculation code seems to be wrong, because one third of three (3) is calculated as two (2) Advantageous
Felidar Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Platinum Emperion If you control Platinum Emperion you cannot even pay 0 life for costs. Disadvantageous
Sedraxis Specter Conceding the game during the cleanup step after having activated Unearth will restart the game. Avoidable Game Breaking
Phyrexian Portal Phyrexian Portal's prompt message is ambiguous whether it's the pile to be exiled or to be searched for, and the rest of the searched pile is put on the bottom instead of being shuffled back in Disadvantageous
Tainted Specter Tainted Specter's ability locks the game for the chosen player. Avoidable Game Breaking
Mist of Stagnation Mist of Stagnation doesn't allow players to choose untapped permanents, will soft-lock the game if there are not enough tapped permanents in the field to fulfil the requirements, and in random cases requires less number of tapped permanents than what should normally be required Game Breaking
Godsire The tokens created by Godsire doesn't clearly stating nor indicating its colors Graphical
Krark's Thumb Krark's Thumb prints all coin flips of its owner three times Graphical
Floodtide Serpent Instead of bouncing an enchantment, attacking with Floodtide Serpent shows you all zones. Avoidable Game Breaking
Oriss, Samite Guardian Using Oriss, Samite Guardian's Grandeur ability during controller's precombat main phase will not allow controller to attack that turn. Disadvantageous
Broodbirth Viper Myriad token(s) don't get exiled at the end of combat Advantageous
Fatestitcher Conceding the game during the cleanup step after having activated Unearth will restart the game. Avoidable Game Breaking
Gemstone Caverns There is a rare issue that can occur with Gemstone Caverns that can restart the game. Game Breaking
Skullcrack The "can't gain life" or "damage can't be prevented" effect doesn't appear in the Effect zone after the spell/ability resolves. Graphical
Caravan Escort If a level-up card would gain an ability that it would through leveling, it won't show it has gained that ability. Graphical
Disciple of Phenax When only some cards from an opponent's hand are revealed, they do not appear in the revealed zone Graphical
Vexing Sphinx Vexing Sphinx's cumulative upkeep make you discard only one card regardless of the amount of age counters it has Advantageous
Glamerdye When you change the color in a card's text, the card won't show the new chosen color in the cards itself, in the tooltip, and not in the zoomed version Disadvantageous
Rhythm of the Wild Rhythm of the Wild incorrectly grants riot to creature cards that enter the battlefield as noncreatures such as Keranos, God of Storms. Advantageous
Necromantic Selection Necromantic Selection causes a game reset in multiplayer Game Breaking
Possibility Storm Possibility Storm will check for both types on an Adventure card. Disadvantageous
Octopus Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Hyena Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Damping Engine Damping Engine activated ability is broken. Sacrificing a permanent pops up another trigger to sac another permanent. Advantageous
Crystal Spray Cards that ask you to choose "a basic land type or a color word" only let you choose a basic land type. Disadvantageous
Crystal Spray Cards that replace a basic land type with another, only change the type of the land but not the mana produced Disadvantageous
Jund Sojourners Sojourners cycle from Alara don't trigger its own triggered ability when cycled Disadvantageous
Realms Uncharted This spell fails to display the destination zones of the chosen lands in the game log. Graphical
Esper Sojourners Sojourners cycle from Alara don't trigger its own triggered ability when cycled Disadvantageous
Creeping Dread The client incorrectly display that you may choose to discard either the Adventure or the creature side of an Adventure card Advantageous
Distended Mindbender When only some cards from an opponent's hand are revealed, they do not appear in the revealed zone Graphical
Distended Mindbender Distended Mindbender lets you skip choosing cards even if appropriate cards are available. Advantageous
Liquid Fire Liquid Fire doesn't let you choose how to deal damage - it all goes to player Disadvantageous
Moonring Mirror Moonring Mirror Gives lets you switch back on the same upkeep Advantageous
Emrakul, the Promised End Casting two copies of Emrakul, the Promised End does not give the opponent two extra turns. Unclassified
Anointed Procession Some cards with replacement effects can replace card draw when a card with Dredge is in the graveyard with various consequences Avoidable Game Breaking
Nether Traitor Nether Traitor triggers when it goes to the graveyard alongside other creatures. Advantageous
Phage the Untouchable Creatures with an ability that destroys creatures that they deal combat damage to ignore Phasing. Advantageous
Ecstatic Awakener If Heir to Falkenrath, Ecstatic Awakener, or Wolfbitten Captive activate their ability, then transform and transform back to the front side in some way, their ability can be activated again in the same turn. Advantageous
Chromatic Sphere Chromatic Sphere's ability is not considered as mana ability Disadvantageous
Neoform Neoform and creatures with +1/+1 counter abilities interact incorrectly Disadvantageous
Dreams of the Dead Dreams of the Dead giving Cumulative Upkeep isn't reflected on a creature Graphical
Keranos, God of Storms Rhythm of the Wild incorrectly grants riot to creature cards that enter the battlefield as noncreatures such as Keranos, God of Storms. Advantageous
Volrath's Shapeshifter Volrath's Shapeshifter does not function as intended. Game Breaking
Cunning Lethemancer The client incorrectly display that you may choose to discard either the Adventure or the creature side of an Adventure card Advantageous
Emblazoned Golem "Kicker {X}" costs do not allow you to spend mana on them correctly. Disadvantageous
Sekki, Seasons' Guide Spirit tokens created by Sekki, Seasons' Guide are not considered to have the same name. Unclassified
Crackling Drake Creatures with variable power and toughness such as Crackling Drake are not correctly updated in the reveal zone. Graphical
Muldrotha, the Gravetide Muldrotha, the Gravetide does not allow you to cast cards from your graveyard with As Foretold. Disadvantageous
Voracious Cobra Creatures with an ability that destroys creatures that they deal combat damage to ignore Phasing. Advantageous
Auspicious Starrix Auspicious Starrix can exile cards permanently. Disadvantageous
Sanguine Sacrament There are known issues with giving flashback to a spell that is put on the bottom of a library as it resolves. Unclassified
Freyalise's Winds Anytime a permanent with a wind counter would be untapped outside of the untap step with Freyalise's Winds in play, a wind counter is removed rather than it becoming untapped wrongly Disadvantageous
Secret Salvage Secret Salvage does not add the cards found from the library to the revealed zone. Graphical
Umbra Mystic Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Flames of the Blood Hand The "can't gain life" or "damage can't be prevented" effect doesn't appear in the Effect zone after the spell/ability resolves. Graphical
Whims of the Fates Whims of the Fates Causes client crashes Game Breaking
Shared Fate Zones that cards appear in due to the replacement ability of Shared Fate are incorrect. Graphical
Pattern Matcher Pattern Matcher Fails to find valid matches Disadvantageous
Shaman of the Great Hunt Shaman of the Great Hunt only puts one counter on creatures with Harmonic Prodigy in play Disadvantageous
Spectral Shift When you change the color in a card's text, the card won't show the new chosen color in the cards itself, in the tooltip, and not in the zoomed version Disadvantageous
Spectral Shift Cards that replace a basic land type with another, only change the type of the land but not the mana produced Disadvantageous
The Great Aurora The Great Aurora shuffles tokens into your library that you can then draw. Unclassified
Archdemon of Unx Archdemon of Unx creates incorrect token assets. Graphical
Olivia Voldaren Olivia Voldaren can target herself with her first ability. Advantageous
Caller of the Hunt Caller of the Hunt doesn't allow you to pick a creature type Disadvantageous
Littjara Kinseekers Harmonic Prodigy causes Changelings to trigger three times. Advantageous
Guardian of the Guildpact Guardian of the Guildpact is untargettable by the triggered abilities of multicolored permanents. Advantageous
Null Profusion Null Profusion triggers when another player casts its owner's cards Advantageous
Unscythe, Killer of Kings Unscythe, Killer of Kings and Scythe of the Wretched trigger when unequipped, bringing any dead creatures back Advantageous
Dripping Dead Creatures with an ability that destroys creatures that they deal combat damage to ignore Phasing. Advantageous
Structural Collapse Structural Collapse doesn't sacrifice the chosen permanents Disadvantageous
Unstable Footing The "can't gain life" or "damage can't be prevented" effect doesn't appear in the Effect zone after the spell/ability resolves. Graphical
Skinshifter The ability context menu of Skinshifter is displayed incorrectly. Graphical
Mana Bloom If you activate Mana Bloom after you determine the total cost of the spell or ability, you can't cancel the process of casting the spell or ability Disadvantageous
Kozilek's Translator The mana abilities of Wall of Roots and Kozilek's Translator cannot be activated while paying the mana cost of a spell or ability. Players can still activate these abilities at any time that player has priority. Disadvantageous
Pyxis of Pandemonium If multiple copies of Pyxis of Pandemonium are on the battlefield, it is difficult to determine where cards are associated. Graphical
Wormfang Newt Wormfang Newt/Turtle returns MDFCs on their land side, rather than their front side. Disadvantageous
Breaching Leviathan Breaching Leviathan does not force the creature to remain tapped for a turn. Unclassified
Trait Doctoring Cards that ask you to choose "a basic land type or a color word" only let you choose a basic land type. Disadvantageous
Trait Doctoring Cards that replace a basic land type with another, only change the type of the land but not the mana produced Disadvantageous
Whim of Volrath Cards that ask you to choose "a basic land type or a color word" only let you choose a basic land type. Disadvantageous
Flaring Pain The "can't gain life" or "damage can't be prevented" effect doesn't appear in the Effect zone after the spell/ability resolves. Graphical
Samurai of the Pale Curtain Samurai of the Pale Curtain does not exile tokens. Disadvantageous
Tangleclaw Werewolf Fibrous Entangler (Flipped Tangleclaw Werewolf) tries to force players who it is not attacking in multiplayer to block it, locking the game as they cannot make a legal block Game Breaking
Bant Sojourners Sojourners cycle from Alara don't trigger its own triggered ability when cycled Disadvantageous
High Seas High Seas only affects red creature spells. Disadvantageous
Withdraw Withdraw is able to target the same creature twice. Advantageous
Eland Umbra Removing all abilities from the creature enchanted by an aura with Totem Armor removes the Totem Armor too Disadvantageous
Forbidden Ritual Forbidden RItual only allows you to do the first option: if you choose not to do the first effect, you do the effect you chose, and then have to choose again Advantageous
Repudiate // Replicate If split cards such as Repudiate // Replicate are exiled face down, they are sometimes still revealed to all players. Unclassified
Mindlash Sliver The client incorrectly display that you may choose to discard either the Adventure or the creature side of an Adventure card Advantageous
Sages of the Anima Sages of the Anima puts the non-creature cards on top of the library instead of the bottom. Disadvantageous

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