3 comps
A5s Shadowplay Plus
Shadowplay Plus takes the shadow priest and elemental shaman core and bolts on a frost mage, destruction warlock and holy paladin for a five-caster wall of ranged burst. It kills through raw instant damage stacked into one global, backed by a silence chain no single healer survives. When the burst is peeled, it simply mana-burns the enemy healer into the floor instead.
C5s DPS Zerg
The all-in 5s archetype: four DPS (arms warrior, sub rogue, frost mage, SL/SL warlock) stacked behind a single discipline priest. You don't win the long game — you CC the enemy healer, dump every cooldown on one target, and delete them before your lone healer runs dry.
CRet Paladin / Disc Priest
A one-shot-window burst comp built around a single perfect setup. The priest Power Infuses the Ret while Repentance locks the healer, then Avenging Wrath, Crusader Strike and a twisted Seal of Command try to delete a target before anyone can react. Feast-or-famine, and it lives and dies by the opening.