Azalor, Berserker of Mythos

Player
At the beginning of each end step, if a creature dealt damage by Azalor this turn died, put two +1/+0 counters on him.
At the beginning of your end step, if no creatures dealt damage by Azalor this turn died, remove a +1/+0 counter from him.
Mana Pool - {r} or {g}