Chittering Harvester is a uncommon Creature — Nightmare card from Magic: The Gathering (Magic Online Promos, PRM).
Uncommon
Magic Online Promos (PRM)
{5}{B}
Power / Toughness
4 / 6
Mana Value
6
Colors
B
Card 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.
