巨量突变 {X}{G/U}{G/U}

瞬间

由你操控的生物之基础力量与防御力为X/X直到回合结束。

87号避难所的进化实验计划，是让实验对象接触能通过空气传播的FEV病毒。结果他们体能快速增强，心智极度萎缩，就连最年长的变种人也变得无比凶残。

en ja 汉语 ⋮

Only the English version of a Magic card receives Oracle updates and errata. View this card in English. (Scryfall note)
Choosing 0 as the value for X will likely cause creatures you control to become 0/0 and be put into the graveyard. (2013-01-24)

Biomass Mutation overwrites any effects that set the power and/or toughness of a creature you control to a specific value. Effects that modify power and/or toughness but don't set them to a specific value (like the one created by Giant Growth), power/toughness changes from counters, and effects that switch a creature's power and toughness will continue to apply. For example, say you control a 1/1 creature that's getting +4/+2 from an Aura, has a +1/+1 counter on it, and is affected by an effect that switches its power and toughness. This creature is 4/6. If you cast Biomass Mutation with X equal to 4, the creature would become 7/9 (4/4, +4/+2 from the Aura, +1/+1 from the counter, then switch power and toughness). (2013-01-24)