Thorne Blackwood

Deathtouch
Whenever Thorne Blackwood destroys a creature you do not control, you may let it live, put a -1/-1 counter on it, and bring a creature back from the graveyard.
Whenever a creature dies under your control, put a +1/+1 counter on Thorne Blackwood.
{1}{b}{b}: put a -1/-1 counter on target creature you do not control.