Curse Rotted Greatwood

Curse Rotted Greatwood enters the battlefield with 4 -1/-1 counters on it.
Defender
{b}{g}{t}; Remove a -1/-1 counter from Curse Rotted Greatwood. Put a -1/-1 counter on each creature you dont control. Then if Curse Rotted Greatwood has no -1/-1 counters on it, it loses defender and gains trample.