Yes, you read that correctly. This is the insane Miracle Shaman deck that I've been using on the ladder over the past few days. Here's the guide:
This deck is a combo deck, so we want to try and draw all of our combo pieces to kill the opponent. We can do this by either playing Gadgetzan Auctioneer + a bunch of cheap spells, or Spirit of the Frog + a chain of spells.
Our ideal plan is to draw Jepetto Joybuzz, and get Malygos or Alexstrasza for 1 mana. With a 1-cost Malygos, we can deal 43 damage to the opponent's face in just one turn with Lava Burst, Lightning Bolt and Totemic Smash. This is made easier against warriors with the Alexstrasza of course, as you can put them down to 15hp, and usually they don't have more than 20 armor around turn 10.
Finally, we can also use Chef Nomi to surpirse the opponent once we've drawn our whole deck. It demands a response from them, so it can also be used to stall in the late game, whilst you look for another combo piece.
For the mulligan, you want to keep:
This deck is very new, and i'm tweaking it every day to make it the best it can be. If you have any suggestions, be sure to put them in the comments below. As for playing the deck, it takes some time to adjust to this playstyle, and to learn to play it to its full potential. You need to be patient, and conservative with your board clears.
As long as you get either Malygos or Alexstrasza for 1 mana with Jepetto Joybuzz, the OTK is easy. Try and survive as long as possible against aggro with the help of Witch's Brew, and use the draw engines to find your combo pieces. When using gadgetzan or spirit of the frog, you don't always need to get full value from the spells that you use; for example, it's normal to use Totemic Might even if you don't have any totems to buff - the card is simply in the deck in order to help you cycle.
As always, if you have any suggestions/questions drop them down below.