Bloodthirster

Equipped Creature gains +2/+0, Lifelink and Deathtouch.
Whenever equipped creature destroys a creature
in battle, put a counter on Bloodthirster.
Equipped creature has +X/+0, where X is the
number of counters on Bloodthirster.
Whenever Bloodthirster becomes unattached
from a creature, sacrifice that creature.
Equip {4}