The lantern is a light source and is used for attracting light creatures in the Tears of Guthix cavern. Players need to use these creatures to traverse the cavern in the Tears of Guthix and While Guthix Sleeps quests. The lantern is also used for killing tormented demons during and after the While Guthix Sleeps quest. Level 49 Crafting is not required if the lens is swapped for a cut sapphire in an already completed lantern.