Boloroha, Loam Shaman

+2: You may sacrifice a land. If you do, search your library for a land card, reveal it, and put it into your hand. Then shuffle your library.
-2: Return target land card from a graveyard to the battlefield tapped under your control.
-8: Creatires your opponents control get -X/-X until end of turn, where X is the number of land cards in all graveyards.