Hearthpwn

Scaling up as a win condition, both with Jades and C'thun, seems to be very consistent to me and I indeed had quite some success with this deck.  Currently at 54-33.

I cut out Wild Growth since it's just a worse version of Jade Blossom after the Level Up Nerf patch. A little ramp makes a Druid happy, especially when going second so fishing for it in the Mulligan phase is generally a good idea.

You could add Mire Keepers if you want to ramp faster but I see no sense in ramping too quickly since this is more of a steady deck, you don't need to get to C'Thun too fast, the Old One needs to scale up first.

Ultimate Infestation can be a lategame win condition when you shuffle your Jade Idols into your empty deck, drawing them next turn with Ultimate Infestation and then generating a Jade Army. Playing it on curve is way stronger though, so make sure to have only 5 cards in your hand on turn 10 when holding it, which is not always archievable since this is a mana heavy deck.

Even after the nerf, Nourish is still a good card. I would only use it for card draw though unless you want to get to Ultimate Infestation quicker. Card draw for 6 Mana is way more consistent though I feel.

I added Brann Bronzebeard for more Shenanigans with Jade-Generation and God-Buffing. You could replace him with Sylvanas Windrunner though. Playing her on turn 9 into a C'Thun Mirror-Match could make you very happy, especially if you want to play your own C'Thun on curve.