Biomass Mutation magic the gathering card art
The List (plst)
#GTC-213rare English Non-Foil

Biomass Mutation
X
{G/U}{G/U}

Instant

Creatures you control have base power and toughness X/X until end of turn.

Illustrated by Dan Murayama Scott
Links
Legalities
Not Legal
standard
Not Legal
historic
Legal
pioneer
Legal
Modern
Legal
Legacy
Not Legal
pauper
Legal
vintage
Legal
Commander
Not Legal
brawl
Not Legal
alchemy
Rulings
Choosing 0 as the value for X will likely cause creatures you control to become 0/0 and be put into the graveyard.
2013-01-24wotc
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).
2013-01-24wotc


Alternate Printings

Biomass Mutation magic the gathering card art
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