Liliana of the Dark Realms

[+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 'T: Add BBBB to your mana pool.'"