Morgul blade

Equipped creature has +2/+1 and Decay.
(Whenever a creature with decay deals damage to a creature put a wither counter on that creature.
Whenever a wither counter is put on a creature put a
-1/-1 counter on that creature. At the beginning of each
end step, if a creature has a wither counter on it, put
another wither counter on that creature. When that creature dies, return it to the battlefield under the control
of the player whose permanent put the first wither
counter on that creature. That cr