Well you could try this team out.
Prot pala (BoK, aura,}
Balance Druid (13% extra damage, treants, spell haste)
Elemental shaman (totems, wrath totem, the oath talent doesn't stack with moonkin aura I heard. But im not sure)
frost Mage (Replenishment, Arcane int, Food, Portals)
Holy priest (Fort, Spirit, Fear ward)