Liliana of the Dark Realms
Magic 2014 Core Set — Mythic
Planeswalker — Liliana
+1: Search your library for a Swamp card, reveal it, and put it into your hand. Then shuffle your library.
-3: Target creature gets +X/+X or -X/-X until end of turn, where X is the number of Swamps you control.
-6: You get an emblem with "Swamps you control have ‘: Add to your mana pool.'"