Erratic Mutation

Erratic Mutation {2}{U}

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.
Details
Legalities
Rulings
  • 2021-03-19 If a card in a player's library has {X} in its mana cost, X is considered to be 0.
  • 2021-03-19 You reveal cards and the creature gets +X/-X all while Erratic Mutation is resolving. Nothing can happen in between, and no player can take actions.
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Printings

Card is in preconstructed decks:

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Foreign names
  • 飘摇异变
  • 飄搖異變
  • Launische Mutation
  • Mutation imprévisible
  • Mutazione Incostante
  • うつろう突然変異
  • Mutação Errática
  • Изменчивая Мутация
  • Mutación errática