Vana, the Necromancer

Eminence — As long as Vana is in the command
zone or on the battlefield, whenever a non-
Zombie-creature you control dies, put a 0/1 black Zombie-token on the battlefield under your
control.
Sacrifice a Zombie-token: you may cast a creature
from target players graveyard by paying {p/b} a
number of times equal to its CMC. That creature
becomes a black Zombie in addition to its other
types.