Artwork unavailableEnglish 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.
选择目标生物。 从你牌库顶开始展示牌，直到你展示出一张非地牌为止。 该生物得+X/-X直到回合结束，X为该牌的总法术力费用。 将所有以此法展示的牌依任意顺序置于你的牌库底。
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.
If a card in a player's library has {X} in its mana cost, X is considered to be 0.
Legality follows the dated Scryfall catalog snapshot.
For draft and prerelease, check the event’s release and rules. Missing statuses stay unavailable.
Official Magic rules| Format | Status |
|---|---|
| Standard | Not legal |
| Pioneer | Not legal |
| Modern | Legal |
| Legacy | Legal |
| Vintage | Legal |
| Commander | Legal |
| Oathbreaker | Legal |
| Alchemy | Not legal |
| Historic | Not legal |
| Brawl | Not legal |
| Comp. Brawl | Not legal |
| Timeless | Not legal |
| Pauper | Legal |
| Duel | Legal |
For draft and prerelease, check the event’s release and rules.
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