The Darkened vs. Woodlanders

Woodlanders: ({2}{g}{g}): Draw a card for each green creature you control. Gain 2 life for each green creature you control.
The Darkened: ({1}{b}{g}): Gain 1 life for each creature in your graveyard. Target player loses 1 life for each creature in your graveyard.
(You may cast one war on this card as a sorcery. The first effect is immediate. The second comes a turn later. End all effects on the third turn.)