I used this deck from rank 9 to 4 with a 65% winrate and i also missed some wins because of missclicks and connection losses.
So this deck builds on the infinite stats combo with:
All you need is a mech on your board on turn 9 (or later) to pull this off as an otk. Against Paladin, Mage, Odd Rogue, Zoo Warlock, Warrior and Hunter you can also pull this of with Wargear or Zilliax for infinite stats but be fast while putting of the combo.
Since the meta does not feature many heavy taunts, you are most likely able to pull this of if you got all the pieces in Hand.
Against Control you are almost guaranteed a win (also because they don't know your win condition). It is hard to get it against druid since they reach their combo super fast.
I can write a more detailed guide if this deck gets a few upvotes.
Have fun trying it out, its definetly worth seeing your surprised opponents :)
So 1 copy of Gnomeferatu is not really stopping combo decks so i cut her out.
I added Doomsayer for more board control.
PS: Sorry for the clickbait, if you take it strictly it is a two turn kill, although the setup is pretty easy to archieve