False User (One of a Kind)

False Users are summoned by the Echo of Jas during the fight with her in One of a Kind. They take the forms of Lucien, Saradomin and Zamorak, and after a few seconds, hit you with a powerful magic attack. To prevent it, they must be killed with either ranged or magic, as they are immune to melee. Due to having only one lifepoint, they can be defeated with little difficulty.