Enchanted Raven Sigil

Source
This item is a quest reward from No Longer Worthy. It also drops from the following members of the Rooksguard in Val'sharah:
 * Reanimated Archer
 * Risen Soldier
 * Starlys Strongbow
 * Risen Soldier
 * Trelan Shieldbreaker
 * Black Rook Spectral Officer

Disenchants into

 * Raven Dust