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Biomass Mutation | Magic: The Gathering

 

Formats Biomass Mutation is Legal in

Block
Standard
Modern
Legacy
Vintage
Commander
 
 

Sets Biomass Mutation is in

Edition
Price
In-Stock

0.75
0

 
 

Official Oracle Text for Biomass Mutation

Card Name:
Biomass Mutation
Casting Cost:
Type:
Instant

Card Text:
Creatures you control become X/X until end of turn.

Flavor Text:
"A regression to ancient forms? A glimpse of future evolutions? Or a fleeting alteration of the present?"
—Vorel of the Hull Clade

Official Rulings for Biomass Mutation

1/24/2013 : Choosing 0 as the value for X will likely cause creatures you control to become 0/0 and be put into the graveyard.

1/24/2013 : 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).

 
 

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