Jagged Bones

Acquisition
Signet of Capture:


 * Shadow of Fear (Nightfallen Jahai) (During the quest Uncharted Territory)

There is a boss with this skill without the quest, but currently bugged. No skills show up to cap after you kill the boss. He is located to the right (a bit of a distance) out of the Realm Of Torment, near a bunch of Ghost NPCs