Vampire Bloodmage

{1}{b}{b}, Put a -1/-1 counter on Vampire Bloodmage : Put a +1/+1 counter on target Human. It becomes a Vampire, and has lifelink and "{b} : Regenerate this creature."
{b}, {t}, Pay 3 life : Put a +1/+1 counter on Vampire Bloodmage.
"Drink my blood and live forever.."