from Saunders’ The Basics of Magic

Illusions and glamours are both spells that disguise the true nature of objects. However, they are distinct spells—illusions make objects seem different than they truly are, while glamours alter specific aspects of objects. Illusion witches specialize in both illusions and glamours.

The most basic illusion spells only disguise appearance and cannot be touched, although more powerful ones impact all of the senses. Illusions come in many forms: invisibility, mirages, projected scenes, decoy spells, disguise spells, and the like. Communication mirrors are also a branch of illusion magic.

Glamour spells are most often used to enhance someone’s allure, beauty, or fame by concealing or accenting certain aspects of that person. Glamours can also be used to prevent recognition or make someone appear a friend without altering that person’s appearance. Often popular during courtship or when first meeting others, glamours are typically cast on people, rather than inanimate objects.

Illusions and glamours can disguise objects for specific people or everyone, and they can be ephemeral or enduring. Like with all spells, the more people impacted or longer they last, the higher the magical cost will be, so wise people restrict themselves to short ones with fewer people impacted. Only seers can see through the most powerful illusions and glamours, although others who can read auras can still see the true aura of those under illusion or glamour spells (unless their aura is included in that spell.)