Zetalot's Priest deck.
Zetalot is a rank 38 EU legend player. He plays Priest almost exclusively. You can find him at http://www.twitch.tv/zetalot.
One of the few Priest decks that doesn't rely on dragging a game to fatigue. Lots of strong AOE and some really fun finishers.
Auchenai Soulpriest + Circle of Healing = 4 mana Flamestrike
Wild Pyromancer + Power Word: Shield + other spells = more AOE
Wild Pyromancer + Holy Nova = 3 damage AOE
Northshire Cleric + Circle of Healing = potential massive card draw
Injured Blademaster + Circle of Healing = turn 3 with a 4/7 minion on board.
The Sunfury Protector is your tech card and should be replaced as the meta warrants. If the meta is aggro heavy, keep the Sunfury. If the meta is control, replace with The Black Knight. If you're seeing a lot of weapon classes, swap with an Acidic Swamp Ooze. Lots of divine shields? Try a Blood Knight.
Cabal Shadow Priest is another card that excels in a meta mostly populated with aggro and rush decks. If the meta is more control oriented, switch him out for Big Game Hunter or Ragnaros the Firelord.