Curse-Rotted Greatwood

{t}: add {g}{b} to your mana pool.
Curse-Rotted Greatwood is black and green.
At the beginning of your end step sacrifice Curse-Rotted Greatwood.
When Curse-Rotted Greatwood leaves the battlefield you can pay {p/g}{p/b}, if you do so you can
put into the battlefield under your control a X/X creature token Curse-Rotted Greatwood,
where X is equale to the total life you lost this
turn.