Nissa, Shaper of Nature

+1: Pay XX life so search for a creature card with power X and put it into your hand, then shuffle your library.
-X: Search your library for half of X lands and put them onto the battlefield tapped
-10: You get an emblem with, "As long as you control a Nissa planeswalker, all permanents are 4/4 elementals in additional to their other types.