Nazar Jakool, God of Undeath

•Grimgrin, Corpse-Born enters the battlefield tapped and doesn't untap during
your untap step.
•Sacrifice another creature:
Untap Grimgrin and put a +1/+1 counter on it.
•Whenever Grimgrin attacks, destroy target creature defending player controls,
then put a +1/+1 counter on Grimgrin.