Jitlan

You would do better with a Pure spec, as Elemental is not the best in PvP if you are planning to do PvP mind I suggest Resto or Ench.

Ench Shamans are Usable somewhat in The Raiding Scene but has its Spotlight in PvP rather due to their insane Damage they can Deal with WF/Windfury I would recommend if planning to do Raiding that you would go Elemental or Resto as it is a bit better in the Raiding Scene. Though if you are planning to do PvP then shoot for it.

What?

Yes, The items Dawn Treaders and The (Golden) Mantle of The Dawn are in the Game. or at least should be if this is true Vanilla. The items are gained by The Argent Quartermasters located For Horde: at the Border of Tirisfall and The Western Plaguelands. And the Alliance Version is Located at the Border of Alterec Mountains and The Western Plaguelands, There is also a Neutral one Located at Light's Hope Chapel in the Zone Called Eastern Plague Lands. Hope this Question Pleases your Expectations.