Nissa, Sage Animist
Legendary Planeswalker -- Nissa
3
[+1]: Reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put it into your hand.
[-2]: Create Ashaya, the Awoken World, a legendary 4/4 green Elemental creature token.
[-7]: Untap up to six target lands. They become 6/6 Elemental creatures. They're still lands.