Instantáneo
Pon X contadores +1/+1 sobre la criatura objetivo que controlas. Luego, contrarresta hasta un hechizo objetivo a menos que su controlador pague una cantidad de maná igual a la mayor fuerza entre las criaturas que controlas.
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.