Hearthpwn

This seems like a solid C'THun deck with a random, unnecessary Yogg-Saron. C'Thun wins games. Yogg just causes chaos. Personally I'd drop Yogg and the Geomancer, and throw in a 2nd Disciple (will be a staple 2 of in every C'Thun deck) and the 2nd Bash.

I seem to be running into the same card draw issue in a Mage Yoggy-Thun build. Have you considered Nexus-Champion Saraad ? That should help both the midrange C'thun creature strategy, as well as, generating spells (that warrior can use no matter what) for Yoggy.

http://www.hearthpwn.com/decks/479841-ancient-greed-ft-yoggy-thun

I like it, but seems weak on card draw.  Might need an acolyte or two.

Maybe instead of the Ancient Harbinger ?