Tangle Geist

Tangle Geist enters the battlefield with 3 +1/+1 counters on it.
{b}, Remove a +1/+1 counter from Tangle Geist: Put a -1/-1 counter on target creature an opponent controls it's controller loses one life.
{g}, Remove a +1/+1 counter from Tangle Geist: Put a +1/+1 counter on another target creature you control you gain one life.