blood drinker

blood mana 2 (each {p/b} mana on this card can be
paid for with {b}, or {b} and up to 2 life. for each
life lost this way put a blood counter on it).
if this creature has 3 blood counters on it it gains
lifelink.
if this creature has blood counters on it and gains
you more health than its cost you put 2 +1/+1
counters on it.