I'm totally gay for Illusion masks and there is a quest involving Sai'd Mordabi for the Mask of the Ksaravi
Item:
Mask of Ksaravi | Vanguard @ Curse
Quest Information
Infiltrate the Ksaravi | Vanguard @ Curse
This is really all the information I have on this quest and if you have any followups to this or any other illusion mask, please don't hesitate to post it here~