Nightwalker, Forest God

Deathtouch, lifelink, indestructible
Pay x life; {b}{b}{b}: Destroy x permanents.
{g}{g}{g}: Search your library for 3 lands, put
them onto the battlefield. Then gain life equal
to the number of lands you control
Exile Nightwalker; each opponent loses 20 life.
You loose the game next turn.