Diabolus the Demon of Fire

Flying, Haste, Hexproof
Firebreath - When Diabolus the Demon of Fire
enters the battlefield or is dealt damage deal X
damage to any target where X is Diabolus the
Demon of Fire's power
Whenever a Demon, Devil, or Imp dies put a
+1/+1 counter on Diabolus the Demon of Fire