Chittering Harvester IKO/80

Set: Ikoria: Lair of Behemoths
Collector Code: IKO/80
Name: Chittering Harvester
Type: Creature — Nightmare
Oracle text: Mutate {4}{B} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Whenever this creature mutates, each opponent sacrifices a creature of their choice.
Rarity: Uncommon