Gacey, God of Blood

When Gacey, God Of Blood enters the battlefield
create three 1/1 bat creature tokens. Put a blood
counter on each of them.
{b}{b}: Create a 1/1 bat creature token.
{r}{r}: Put a blood counter on target bat you
control.
Sacrifice a bat: Target opponent loses life
equal to the amount of blood counters that were
on it and you gain that much life.