Card Codex

M:tG card similarity search

17 May 2024: Card library updated.

Erratic Mutation

2U · Instant

Choose target creature. Reveal cards from the top of your library until you reveal a nonland card. That creature gets +X/-X until end of turn, where X is that card's mana value. Put all cards revealed this way on the bottom of your library in any order.

Similar cards

Color identity:
NameManaTypeText
Hurkyl, Master Wizard 1UULegendary Creature — Human Wizard Advisor At the beginning of your end step, if you've cast a noncreature spell this turn, reveal the top five cards of your library. For each card type among noncreature spells you've cast this turn, you may put a card of that type from among the revealed cards into your hand. Put the rest on the bottom of your library in a random order. 2/4
Zyym, Mesmeric Lord 1UBBLegendary Creature — Vampire Wizard Flying, deathtouch When Zyym, Mesmeric Lord enters the battlefield, target opponent chooses an order for the cards in their hand, then reveals them one by one until you say stop. That player then discards the most recently revealed card. 3/4
Kamahl's Summons 3GSorcery Each player may reveal any number of creature cards from their hand. Then each player creates a 2/2 green Bear creature token for each card they revealed this way.
Arsenal Thresher 2W/BUArtifact Creature — Construct As Arsenal Thresher enters the battlefield, you may reveal any number of other artifact cards from your hand. Arsenal Thresher enters the battlefield with a +1/+1 counter on it for each card revealed this way. 2/2
Merrow Harbinger 3UCreature — Merfolk Wizard Islandwalk (This creature can't be blocked as long as defending player controls an Island.) When Merrow Harbinger enters the battlefield, you may search your library for a Merfolk card, reveal it, then shuffle and put that card on top. 2/3
Planar Atlas 2Artifact Planar Atlas enters the battlefield tapped. When Planar Atlas enters the battlefield, you may look at the top four cards of your library. If you do, reveal up to one land card from among them, then put that card on top of your library and the rest on the bottom in a random order. {T}: Add {C}.
Baneful Omen 4BBBEnchantment At the beginning of your end step, you may reveal the top card of your library. If you do, each opponent loses life equal to that card's mana value.
Shapeshifter's Marrow 2UUEnchantment At the beginning of each opponent's upkeep, that player reveals the top card of their library. If it's a creature card, the player puts the card into their graveyard and Shapeshifter's Marrow becomes a copy of that card. (If it does, it loses this ability.)
Crown of Convergence 2Artifact Play with the top card of your library revealed. As long as the top card of your library is a creature card, creatures you control that share a color with that card get +1/+1. {G}{W}: Put the top card of your library on the bottom of your library.
Dark Tutelage 2BEnchantment At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its mana value.
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