Bloodbane Blade

Mana Cost: 3
Bloodthirsty Aspect: when it deals damage to a creature, put that many +1/+1 counters on it.
Dark Bond: You have lifelink as long as you
control Bloodbane Blade.
Blood Ritual {1}{b}{b} Sacrifice a creature: Put +1/+1 counter on Bloodbane Blade.
Curse of Thirst: Whenever Bloodbane becomes equipped, sacrifice a creature.