Biomass Mutation 
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Vault 87's Evolutionary Experimentation Program exposed subjects to an airborne version of FEV. Rapid physical enhancements accompanied sharp mental regression, and the oldest mutants would become almost feral.
Artist:
Nicholas GregoryShare:
Text:
Creatures you control have base power and toughness X/X until end of turn.
Rulings:
No rulings foundLegality:
- standard: Not legal
- future: Not legal
- historic: Not legal
- timeless: Not legal
- gladiator: Not legal
- pioneer: Legal
- explorer: Not legal
- modern: Legal
- legacy: Legal
- pauper: Not legal
- vintage: Legal
- penny: Legal
- commander: Legal
- oathbreaker: Legal
- standardbrawl: Not legal
- brawl: Not legal
- alchemy: Not legal
- paupercommander: Not legal
- duel: Legal
- oldschool: Not legal
- premodern: Not legal
- predh: Not legal
