Bloodthirsty Hellspawn

Bloodthirst 4 (If an opponent was dealt damage this turn, this creature enters the battlefield with four +1/+1 counters on it.)
{b/r}{b/r}: Target creature gets a -1/-1 counter, target player loses 1 life, put a +1/+1 counter on Bloodthirsty Hellspawn, gain 1 life.