Gretchen Cecani

Eminence — At the beginning of your upkeep, if Gretchen Cecani is in the command zone or on the battlefield, you may pay {2}. If you do, put target Zombie creature card you own in exile into their owner's graveyard.
Menace, deathtouch
Sacrifice a creature: Put target Zombie creature card with mana value equal to 1 plus the sacrificed creature’s mana value onto the battlefield. Activate only as a sorcery and only once each turn.