blood blade

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).
equip {b}{b}
equipped creature gets +2/+2.
at your upkeep if this card is equipped to a
creature remove a blood counter from this card.
if you removed a blood counter put a +1/+1
counter on the equipped creature.