Mulligans
This is an altered version of the classic silence priest into a deck providing two possible combo OTKs.
In the early game you should go for tempo with Northshire Cleric, Ancient WatcherArcane Watcher, Hench-Clan Shadequill with OTK coming from Divine Spirit into Topsy Turvy / Inner Fire.
The second real OTK comes from combination of 3-5 following cards Lazul's Scheme (optional) into Shadow Madness + Divine Spirit (optionally both) with Topsy Turvy or Inner Fire.
In unfavourable board situations the deck has potential to clear the board with Circle of Healing + Auchenai Soulpriest or Wild Pyromancer + Power Word: Shield + Silence.