Anub'arak, The Traitor King

Anub'arak, The Traitor King enters tapped and
doesn't untap during your untap step.

Sacrifice another creature: Untap Anub'arak and
put a +1/+1 counter on it.

Whenever Anub'arak attacks, destroy target
creature defending player controls, then put a +1/+1
counter on Anub'arak, The Traitor King.