Rot-Wood Summoner

Blight (When this creature enters the battlefield or attacks, target creature gets a -1,-1 counter.)
{b/g}, {t}, Remove a -1,-1 counter from target creature, then create a 1/1 green Rotling creature token with "Sacrifice this creature: target Opponent loses 1 life and you gain 1 life."
The Rot-Wood is ever changing, constantly finding new ways to destroy its adversaries.