Nissa, Corrupter

+2: Search your library for a Swamp card and put it onto the battlefield tapped. Then shuffle your library.
-3: Nissa deals damage equal to the number of Swamps you control to target creature or player. You gain life equal to the damage dealt this way.
-8: You get an emblem with "Whenever a land an opponent controls becomes tapped, each opponent loses 2 life."