Dimitri, Grave Resurrector

Whenever you discard a card or sacrifice a
permanent you may pay {2}{p/u}{p/b} and cast a spell
from exile without paying its mana cost, if it is a creature, it becomes a zombie in addition to it's
other types.
{p/u}, Exile target card from a graveyard.
{t}, Discard a card or sacrifice a creature.
"In life there is chaos, but in death there is purity."
—Dimitri