Hearthpwn

It's actually a two-turn kill to be fair, but if you don't count the setup, the opponent is indeed '30-0'ed in one turn.

It's a Divine Spirit combo you are perfectly familiar with, the only thing being changed is the target of the buffs. This deck features Gyrocopter as our newest voltron. 

The combo is the following:

1) We recklessly draw our deck with Gadgetzan Auctioneer and a bunch of 0-cost spells;

1) We discount a Gyrocopter and a Camouflaged Dirigible with a Galvanizer;

2) We play the 5-mana Gyrocopter and stealth it with the 5-mana Camouflaged Dirigible;

3) We cast double Divine Spirit and Topsy Turvy on the Gyrocopter, silence opponent's minions if needed and ram the face for 40 damage.

Will this deck be good? I'm a bit skeptical about it. Will it be good enough to compete with other versions of Divine Spirit + Inner Fire combo Priest? Unlikely, but there's always a possibility. The main downside of this deck is its heavy setup and late blowout. The advantage, however, is the windfury on our voltron, which makes it much more reliable for oneshotting opponents. 

I also consider building another version of this deck, but based on Galakrond, the Unspeakable, because there is such a card as Fate Weaver which can replace or even be added to Galvanizer. That version of the deck can be much slower, more control-oriented and able to stall the game until you finish assembling your combo. Obviously these are two absolutely polar decks gameplay-wise, one is an all-in miracle deck trying to be as fast as fuk boi possible, the other one is a control deck with a combo aspect. It is yet to be determined which version will be better, if any.