Blackbane Defender

First Strike, Defender
Whenever Blackbane Defender enters the
battlefield, tap{x} where X is the number
of +1+1 counters on Blackbane Defender.
{t}, Add one +1+1 counter to Blackbane
Defender.
Remove +1+1 counter, put 1/1 black
artifact shadow creature token onto the
battlefield with Deathtouch.
{ut}, sacrifice a creature token, put -1-1
counter on a target creature.