Unstable Mutation⁣ - Ultimate Masters⁣ (Uncommon)⁣ [80]

Unstable Mutation is an Aura from Ultimate Masters that enchants a creature, giving it a +3/+3 boost. However, at the beginning of the enchanted creature's controller's upkeep, it receives a -1/-1 counter, making it a temporary power increase with a trade-off. This card is effective for aggressive strategies that aim to deal damage quickly before the downside kicks in, but it requires careful timing and consideration of your creature's survivability.