You have shown yourself to be a capable priest and a credit to the people of Gnomeregan. The high tinker and the king of Stormwind wish to honor your contribution to the Alliance.
They have commissioned the royal enchanter to create a special staff.
The materials for such a weapon can only be found in the cursed Shadowfang Keep in Silverpine Forest. Travel there and find the lost holy symbol of Commander Springvale, a supply of moontouched wood, and ghostly essence from the spirits haunting the keep.