Kormag, Harbinger of Hate

When Kormag, Harbinger of Hate enters the battlefield, sacrifice each other creature you control. Put a +1/+1 counter on Kormag for each creature sacrificed this way.
Trample, haste
Sacrifice a permanent: Kormag gains your choice of deathtouch or doublestrike until end of turn.
They will all suffer, even the ones I like.