This is the 3rd quest of the Kelethin Betrayal. You will be warned repeatedly that you will now lose ALL faction with Kelethin and your combat arts/spells will change to Apprentice I level upon completion of the Betrayal quest.
He asks you to steal the following Sul Spheres in Kelethin:
Hiraen Aravirt's Sul Sphere ( 272, 107, 151 ) /waypoint 271.84, 106.51, 151.37 is in Venla Vaara's chest near the bank. Search the chest to get the Sul Sphere.
The Greenlight's Sul Sphere ( 342, 129, 287 ) /waypoint 342, 129, 287 is on the 2nd floor of the 1st room at the Protectors of Growth near Gearheart's Forge.
Maayiri Ellia's Sul Sphere ( 104, 96, 495 ) /waypoint 104, 96, 495 is on the 2nd floor of the 1st room at the House of the Falling Stars, SE platform of Kelethin.
Jyoril Maarson's Sul Sphere ( 537, 71, 297 ) /waypoint 537, 71, 297 is in the 2nd room of Joleena's Restaurant. On the chair near Bettina Meriaan is the backpack you need to search to receive the update.