Qiraji Martial Drape

Qiraji Martial Drape is a Cenarion Circle armor token. It can be exchanged along with various idols and scarabs at various NPCs at Cenarion Hold for the following items:
 * Drape of Unyielding Strength
 * Cloak of Veiled Shadows
 * Shroud of Infinite Wisdom
 * Drape of Vaulted Secrets

Source
This item drops from Kurinnaxx, General Rajaxx, Buru the Gorger, and Ayamiss the Hunter in the Ruins of Ahn'Qiraj.