Curse-Rotted Greatwood

Curse-Rotted Greatwood enters the battlefield
with X +1/+1 counters on it, where X is the
amount of nonland permanents you've destroyed
or sacrificed throughout the game. You may
remove any number of +1/+1 counters from
Curse-Rotted Greatwood to sacrifice or destroy
any number of nonland permanents. If you
destroy a nonland permanent, you lose 2
life. If you sacrifice a nonland permanent, you
gain 2 life.