Fuel the Undead

When Fuel the Undead enters the battlefield,
create three 1/1 white Human creature tokens.
At the beginning of your end step, sacrifice a
living creature you control (living creatures are not ghosts, skeletons, spirits, or zombies). If you cannot, sacrifice Fuel the Undead.
Non-living creatures you control have
deathtouch, lifelink, trample, and undying 1.