Rainbow Scarecrow deck. It focuses on taking opponents cards and strategies, hitting them with it, then destroying it, while clocking down to annihilation of the board. It's themed after the reapers from Mass Effect, and I've altered my reaper King with the art from Rage Extractor , because that looks like a straight up reaper.

Praetor's Grasp lets me view their library, and try to infer their deck's strategies. I can usually dismantle a strategy by picking the right card, and -IDEALLY- adapt that card into my own strategy. Before I balanced the mana, I once used it to play a land. That was sad.

Serious destruction synergy between Reaper King + Conjourers Closet + any scarecrow

Ashnod's Altar paired with my theft spells is a nice way to permanently rid the board of an opponent's creature and get free mana.

All in all, if Spawnsire can stay on the field long enough to pay 20 mana, (I've put all of my other eldrazi spells in the sideboard.) I can drop 20 Eldrazi on the board.