Since apparently my Mecha'thun decks weren't showcases in the latest Weekend of Wild Hearthstone Deck issue, I suppose I am obliged to write the guide for this deck.

So the gameplan is rather simple. Play Wildheart Guff, accumulate a lot of Mana, then combo Gadgetzan Auctioneer with Jade Idol for an instant chain of Jade Golems that will continue to scale. Guff's Hero Power is, as a side bonus, excellent with Idol because of the ability to draw a card, letting you basically always summon two Jade Golems each turn.

Before all that, you have standard stalling tools for any Wild Druid, minus Spreading Plague because of it also costing 6, thus interfering with Capture Coldtooth Mine that we use to tutor Auctioneer. Instead, we run Starfall to have some AoE, and while it prevents Jerry Rig Carpenter from having better odds at fetching Idol, the AoE and potential board wipe in tandem with Poison Seeds is too good to pass up.