Ulimo, Dusk Outcast

{b}{g},{t}: Create a 1/1 black hyena creature.
Sacrifice a hyena: Create a 2/2 black gnoll creature.
Activate this ability only when you could cast a
sorcery.
Morbid- If nontoken creature died this turn, you may pay {1}{b} and exile that card
from its owner's library and then create a 2/2 black zombie creature.