This is my Topsy Turvy priest.
I've used it to climb ladder the last couple of days. It was a lot of fun and you have a decent change against most top tier decks.
The changes i would suggest if you face lots of druids, control priest and even-locks are: adding Lyra the Sunshard (removing Shadow Word: Death) and a second Shadow Visions (removing Spirit Lash).
I hope all you guys give it a change. It might take a while to master the deck, but hunters will hate you so damn much :). I look forward to your reactions