Quelaag, Chaos Witch

+1: Search your library for a swamp card, reveal it, 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 'tap, add 4 black to your mana pool.' "