Khorne, the Blood God

Indestructible, Menace

At the end of each combat phase, if Khorne the Blood
God is among the attacking creatures, defending player
takes damage equal to the number of attacking creature
and Khorne the Blood God recieves that many +1/+1
counters. Khorne the Blood God's base power and
tougness is equal to the number of red and/or black
demons, berserkers, or warriors you control plus eight.

He cares not from whence blood flows, only that it does.