"Enchanters" often practice a type of magic that produces no physical effects on objects or people, but rather deceives the observer or target through the use of illusions. Enchantresses in particular practice this form of magic, often to seduce. For instance, the Lady of the Green Kirtle in C.S. Lewis's "The Silver Chair" enchants Rilian into forgetting his father and Narnia; when that enchantment is broken, she attempts further enchantments with a sweet-smelling smoke and a thrumming musical instrument to baffle him and his rescuers into forgetting them again.