The Blade of the Exile

Equip {4}, discard a card. Equipped creature
must be a Warrior.
Equipped creature get +3/+0, First Strike,
Deathtouch and Trample. The first creature
killed each turn by the equipped creature is
exiled. Equipped creature get +1/+0 each time a creature is exiled this way.
At the beginning of your upkeep step, sacrifice
The Blade of the Exile unless you pay 2 Life.