Miracle C’thun Priest
Gadgetzan Auctioneer is the key card here as this helps to draw the combo pieces and also to empty the deck quickly.
The combo needs 2x Galvanizer, 1x Seance, 1x Shadow Word: Death and Mecha'thun.
The idea is to play Galvanizer and Seance to get Mecha'thun to 7 mana to combo it out with Shadow Word: Death.
Caution : Only play if u wanna have fun and not serious about laddering in general.