
Put X +1/+1 counters on target creature you control. Then counter up to one target spell unless its controller pays mana equal to the greatest power among creatures you control.
"Remind me to send the biomancer team a gift basket." —Olana, Simic field researcher
Illustrated by Filip Burburan · Murders at Karlov Manor · #227
2024-02-02
If you control no creatures as Repulsive Mutation is resolving, the amount of mana the target spell's controller must pay to stop their spell from being countered is 0. That player can choose not to pay 0 mana; if they do, the spell will be countered.