#1 - Aug. 16, 2013, 9:15 a.m.
Blizzard Post
As the Orgrimmar invasion begins in 5.4, Vol’jin and his forces will move beyond gathering supplies and into a full assault on the Horde capital. This means that once the new patch goes live, the Battlefield: Barrens weekly quest will no longer be available.

Those of you who have a Radical Mojo after the patch goes live will still be able to use it with existing armor tokens. However, Ravika, the Darkspear Rebellion Quartermaster, will no longer be available for purchases, but you will have a rare chance at receiving the Raptorhide Boxing Gloves and Gahz'rooki's Summoning Stone by killing the Kor’kron, and other associated mobs in Northern Barrens.