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I think you want to be in green, particularly for Mister Obvious and acidic slime .  There are also a couple of simic cards coming out in gatecrash that will fit in very nicely.

community.wizards.com/go/thread/view/758...

your deck is almost identical to mine.  I had some searing spear though that really helped.  It's a fun deck to play because once your combo goes off there are probably 5 standard legal cards that can stop it.  And most people won't even realize they can use them.  The biggest problem for me was rakdos decks.  They would screw me up everytime.  

Edit: Don't read that. I didn't realize I didn't have the decklist up there.  I ended up winning around 4 or 5 of the probably 13 or 14 games.  I think I might have won 1 or 2 matches.  The only issue i had was the combo just took too long to execute.  And if someone plays a counter on any of the 3 required cards that turns into a BIG problem.  I'm attempting to swap out a couple cards for Izzet Staticaster and splash green ONLY for Nightshade Peddler .  When bonded, that turns into an instant that kills all their creatures continuously.  And i'm with you on thragtusk.  He most certainly does not belong in every deck.  

My list was
Searing Spear  
Pillar of Flame
Rewind
Syncopate
Gilded Lotus
Archaeomancer
Deadeye Navigator
Zealous Conscripts
Electrickery  (for spirit decks and the like)
Divination