Belzar, King of the Abyss

Flying, menace
Undying (When this creature dies, if it had no
+1/+1 counters on it, return it to the battlefield under
its owner's control with a +1/+1 counter on it.)

{3}{b/r}, remove a +1/+1 counter from Belzar:
Belzar deals 6 damage to any target and you gain
6 life.
"They shall burn."