From the Staff of the Nomads quest, introduced during the Should the Stars Fall event. Purchased at Link to NPC.

Note
A hastily written note.


The dark spawn came in force to steal his staff. Those who have sworn eternal service to Anadil, in both life and death, repulsed the attack, but it cost us greatly. In order to prevent them from stealing the remainder of the staff, one of our number has taken it to the necropolis found at 49S, 54.3W and hidden it there. The rest of our party are moving toward the abandoned observatory to the northeast. We believe the spawn are holding the piece they stole there.


-- Unknown