Hearthpwn

Got the idea from Chump.

I haven't played competetive in a long while so I'm still climbing my way toward diamond. That means I probably haven't faced the most optimal decks. I've got tons of card draw to draw the combo pieces, and some healing and control cards for survival. 

The basic idea is: Bolner + Lightning Bloom + Y'Shaarj = infinite Circus Medic + Dunk Tank

(alternatively Bolner +discounted Y'shaarj)

Canal Slogger is great against aggressive matchups, and is a potential draw from Primal Dungeoneer. We run three weapons to maximize the draw potential of Cagematch Custodian. Auctionhouse Gavel can be used to discount Y'Shaarj, in case we don't draw Lightning Bloom for the combo. Be mindful of how you use the 5+ mana cards, since you need them to corrupt atleast one Circus Medic and one Dunk Tank before playing the combo. 

Obviously might need to fine tune the deck, but I've had some success against questlock, various hunters, druids, priests and shamans.