Light is first encountered during the quest, where it is guarding the Light Chamber in the Empyrean Citadel for its master Sliske with its "friend", Shadow. Light is very cheerful, and seemingly oblivious to how much Shadow hates him. He is happy to allow you to pass after you complete the puzzle. The mask is upgraded after completion of the Dishonour among Thieves quest. This upgrade gives the mask, when worn, a 1 in 30 chance in combat that a wight ranger will spawn and fight for you. The mask cannot be used with Dreadnips and the wights will not appear in PvP.