Hearthpwn

Have made a purify priest deck, works pretty well against aggro depending on draws, very well against control.  Only real weakness is jade decks, especially jade druid.

Will write up a full length guide at +10 votes.

Feel free to comment any questions.

Mini-guide:

Goal is to play value minions, such as 2 mana 4/5 ancient watcher, and then silence them with either purify or silence.  Can become an aggro deck if you have the perfect early game start, but it's also good for control because it is very good with outlasting your opponent.  The big dragons (Alexstrasza and Deathwing) serve for good bodies to silence if you get them off of Barnes, but also help out with Drakonid Operative, which has an insanely OP effect. 

Winrates:

vs. Warrior: 78% (7-2)

vs. Shaman: 43% (3-4)

vs. Rogue: 57% (4-3)

vs. Paladin: 67% (4-2)

vs. Hunter: 100% (2-0) lol who plays hunter anymore

vs. Druid: 38% (3-5)

vs. Warlock: 67% (6-3)

vs. Mage: 63% (5-3)

vs. Priest 43% (3-4)