Oracle text
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.
Illustrated by Zoltan Boros & Gabor Szikszai
Released on June 7, 2013
Tags
Legality
- Commander
- Standard
- Modern
- Legacy
- 1v1 Commander
- Alchemy
- Standard Brawl
- Pioneer
- Pauper
- Historic
- Vintage
- Timeless
- Brawl
- Competitive Brawl
- Future
- Gladiator
- Oathbreaker
- Old School
- Pauper Commander
- Penny Dreadful
- PreDH
- Premodern
- Tiny Leaders: Reborn
LegalNot legalBanned / restrictedUnknown
Rulings
If a card in a player's library has {X} in its mana cost, X is considered to be 0.
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.