Bit of fun using Hemet to thin your deck out into C'thun finisher. You can hold onto either mimic pods, doomcallers, shadowcasters, shadowsteps, etc. to pump out multiple end game c'thuns once you mill yourself with hemet. Either turn 6 him into heavy end game draws or save it for when you have a pumped up version of c'thun to drop. Will tweak as time goes on but right now this is a basic version of the archetype (first one so far?).

UPDATE 1: Added twin emperor, prep, thalnos. Twin works really well with the bounce and copy mechanics and curves on 7 after hemet nicely. Thalnos helps with draw and early board control cards. Prep lets you drop c'thun as well as play cards in the same turn or fan of knives/mimic pod into c'thun after hemet. Overall a really fun deck to play so far, I'm finding c'thun cards to have nice bodies on curve and can properly control the board into late game. It gets a lot of concedes too once people realize their quests/control decks don't stand a chance when they are at 15hp on turn 5 and a c'thun is still building. Post advice and comments here so I can update the list in the future!