Biollante

Forest walk, Swamp walk, Undying
Biollante power and toughness are each equal to the number of lands in play and in the graveyard.
{b}{g}: You may put a plant, fungus, treefolk or saproling creature card from your hand onto the battlefield.
Whenever a creature dies, create a 3/3 green plant creature token with {t} add one mana of any color to your mana pool.