Knight of Smoke and Shadow

First strike, deathtouch.

Knight of Smoke and Shadow enters the battlefield with X+1/+1 counters.

Whenever you gain life, put that many +1/+1 counters on Knight of Smoke and Shadow.

{w/b}: Remove a +1/+1 counter from this creature, put into the battlefield tapped and attacking, a colorless 1/1 spirit knight creature token with lifelink. Activate after blockers are declared.