Blood Magus

Lifelink
Blood Sorcery (Whenever you gain life, put a +1/+1 counter on Blood Magus.)
Sanguine Mastery (T, Pay 2 life: Draw a card. Activate this ability only if this creature has three or more +1/+1 counters on it.)
In the dark rites of the blood magi, power flows not just through the veins, but in every drop of spilled life.