Shaman will be given the quest Elemental Mastery, which sends them to collect samples of air, fire, earth, and water to take to Bath’rah the Windwatcher in Chillwind Point. They can get there by following the river north from Tarren Mill in Hillsbrad Foothills. These samples can be gathered from the elementals in Alterac Valley. Once they’ve turned in the quest, he’ll give them the quest Spirit Totem, which will send them into the Western Plaguelands. Once the quest is turned in, he’ll give another quest, Da Voodoo, which will send them into the depths of the Temple of Atal’Hakkar.
At the completion of this questline, they’ll be able to choose between three rare-quality rewards: Azurite Fists, Wildstaff, and Enamored Water Spirit.