Strela, Voice of the Dead

At the beginning of each end step, exile target creature from
a graveyard.

{t}: Put a creature exiled with Strela onto the battlefield under your control. It gains haste and becomes a Zombie. At the beginning of your end step, if you don't have Witchcraft, exile it.

Dark Magic—You may activate an ability of
this creature from your graveyard by discarding a card in addition to its other costs. If you do, exile this creature at the beginning of the next end step.