Caspar, Master of Sangromancy

Blood magic 2
Sacrifice a Vampire: put a +1/+1 counter on
Caspar, Master of Sangromancy.
Whenever another creature under you control
dies, Caspar deals damage equal to that creature's toughness to any target.
If he had not been the king's favorite, other nobles
would have killed him a long time ago, for
cannibalism, the worst of a few unforgivable
sins of the vampire kin.