Nissa, Joraga Druid

+1: Look at the top four cards of your library. You may reveal a land from among them and put them into your hand, then shuffle your library.
-2: Search your library for two basic forests. Put one onto the battlefield tapped and the other into your hand, then shuffle your library.
-7: You get an emblem with "Whenever you tap a forest for mana, add one mana of any color that land could produce."