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Creatures you control have base power and toughness X/X until end of turn.
Abilities, attacks, weakness & resistance
Other cards from Gatecrash
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Biomass Mutation (GTC 213, foil) is a rare instant from the Gatecrash expansion. It sets creatures you control to base power and toughness X/X until end of turn, with X paid via {X}{G/U}{G/U}. The effect overwrites effects that set specific power/toughness values but interacts additively with modifiers like Auras, counters, and power/toughness switches.
Catalog pricing data as of 20 May 2026, 19:13
