Biomass Mutation {X}{G/U}{G/U}
Instant
Creatures you control have base power and toughness X/X until end of turn.
Prints (49)
| Set | # | Rarity | Finishes | USD | Foil USD |
|---|---|---|---|---|---|
| Secrets of Strixhaven Commander (SOC) | 297 | rare | nonfoil | $0.30 | — |
| Duskmourn: House of Horror Commander (DSC) | 214 | rare | nonfoil | — | — |
| Duskmourn: House of Horror Commander (DSC) | 214 | rare | nonfoil | — | — |
| Duskmourn: House of Horror Commander (DSC) | 214 | rare | nonfoil | — | — |
| Duskmourn: House of Horror Commander (DSC) | 214 | rare | nonfoil | — | — |
| Duskmourn: House of Horror Commander (DSC) | 214 | rare | nonfoil | $0.23 | — |
| Duskmourn: House of Horror Commander (DSC) | 214 | rare | nonfoil | — | — |
| Fallout (PIP) | 1003 | rare | foil | — | $1.09 |
| Fallout (PIP) | 475 | rare | nonfoil, foil | — | — |
| Fallout (PIP) | 212 | rare | nonfoil, foil | — | — |
| Fallout (PIP) | 212 | rare | nonfoil, foil | — | — |
| Fallout (PIP) | 212 | rare | nonfoil, foil | — | — |
| Fallout (PIP) | 212 | rare | nonfoil, foil | — | — |
| Fallout (PIP) | 212 | rare | nonfoil, foil | — | — |
| Fallout (PIP) | 212 | rare | nonfoil, foil | $0.22 | $0.41 |
| Fallout (PIP) | 475 | rare | nonfoil, foil | $0.36 | $0.42 |
| Fallout (PIP) | 212 | rare | nonfoil, foil | — | — |
| Fallout (PIP) | 740 | rare | foil | — | $0.88 |
| Fallout (PIP) | 475 | rare | nonfoil, foil | — | — |
| The List (PLST) | GTC-213 | rare | nonfoil | $0.33 | — |
| Commander 2021 (C21) | 209 | rare | nonfoil | — | — |
| Commander 2021 (C21) | 209 | rare | nonfoil | — | — |
| Commander 2021 (C21) | 209 | rare | nonfoil | $0.22 | — |
| Commander 2021 (C21) | 209 | rare | nonfoil | — | — |
| Commander 2021 (C21) | 209 | rare | nonfoil | — | — |
| Commander 2021 (C21) | 209 | rare | nonfoil | — | — |
| Commander 2021 (C21) | 209 | rare | nonfoil | — | — |
| Commander 2021 (C21) | 209 | rare | nonfoil | — | — |
| Commander 2021 (C21) | 209 | rare | nonfoil | — | — |
| Commander 2021 (C21) | 209 | rare | nonfoil | — | — |
| Commander 2019 (C19) | 187 | rare | nonfoil | — | — |
| Commander 2019 (C19) | 187 | rare | nonfoil | $0.23 | — |
| Commander 2019 (C19) | 187 | rare | nonfoil | — | — |
| Commander 2019 (C19) | 187 | rare | nonfoil | — | — |
| Commander 2019 (C19) | 187 | rare | nonfoil | — | — |
| Commander 2019 (C19) | 187 | rare | nonfoil | — | — |
| Commander 2019 (C19) | 187 | rare | nonfoil | — | — |
| Commander 2019 (C19) | 187 | rare | nonfoil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | — | — |
| Gatecrash (GTC) | 213 | rare | nonfoil, foil | $0.27 | $0.50 |
Rulings
- 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 Choosing 0 as the value for X will likely cause creatures you control to become 0/0 and be put into the graveyard.