Liliana of the Dark Realms (SDCC 2013 Exclusive)

[+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 pools.'"