Kindo Shadowstep +
Tome of Horrors +
Indifference + any discard (often via
Chairman's Contract or
Feln Vow), or any of your units dealing damage = they mill their whole deck and you win this turn. This is an all or nothing combo deck with no way to recover when things go wrong. Be careful to play around discard and fast removal. I got to masters in June with this deck.
This deck feels really consistent for a combo deck but maybe people just don't play around it well. I'm getting the combo on turn 5-6 pretty often, but you can play everything from the hand with 7 power so I'll usually wait for that if I can. Hold on to one of the discard powers if possible, a lot of the time you need them to start the combo.
Running 39 power to make initial draws/redraws more consistent. The amount of power doesn't reduce the likelyhood of seeing non-powers in the opening hand/redraws (at least not significantly). So running as many power as possible makes you see the handful of nonpower cards you run more consistently. This is ideal for combo decks. Redraws are strong, so redraw often, even to 6. Card advantage doesn't matter so much when you have a 3 piece OTK combo. I think the large amount of power is really important, I wouldn't change it.
Ideally you have a tome and 2 merchants in the opener. You can make do with 3 merchants but playing the display means you'll probably have to wait for 7 to combo.
Sabotage seems like the best way to protect the combo,
Corrupt would also work but I don't think as well. You could also run removal in that slot too but I haven't used it much either way. I mostly just get the combo from the market and win.
Saloon Massacre is great to stall if needed, and you'll probably have market cards to spare.