Hearthpwn

Naxx Edit: I have taken out Spectral Knight and Cairne Bloodhoof and replaced them with Feugen and Stalagg creating a great mid to late game combo with the arrival of Thaddius. You can change a couple of cards and even include Reincarnate to get even better value. 

I have a lot of success with this  midrange control shaman going from Rank 20 to Rank 8. Its quite strong against most deck types but can have a little trouble with Super Aggro Decks.

I started using a Spectral Knight, as it is difficult to remove especially with a Defender of Argus on it. The main aim of the deck is to control as much as possible whilst buffing your totems and creatures. I removed the Doomhammer as I found it to be too slow to get any sort of combo going. Additionally, most of my encounters on the ladder have been against the deathrattle Shamans, here is where the Acidic Swamp Ooze gets great value as most of them are running a Doomhammer. If you dont have a Cairne Bloodhoof, a great substitute is the Sludge Beltcher or even a Argent Commander. 

Enjoy.