TYPE
Instant

ABILITY
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.

ILLUSTRATOR
Zoltan Boros & Gabor Szikszai

LEGALITIES
Standard Future Historic Timeless Gladiator Pioneer Explorer Modern Legacy Pauper Vintage Penny Commander Oathbreaker Standardbrawl Brawl Alchemy Paupercommander Duel Oldschool Premodern Predh

LANGUAGES
DE EN ES FR IT JP PT RU ZH-CN ZH-TW

RULINGS

• 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.
• 2021-03-19 If a card in a player’s library has {X} in its mana cost, X is considered to be 0.