

Because bile sacs contain magic, bile sac users can continue to use magic even in places where there is no other natural source of magic present, such as the Human Realm. Each bile sac contains different magic phlegms that can be mixed together to create different spells, and thanks to this natural magic reservoir, witches and biped demons can cast a variety of spells just by drawing a spell circle. The most common source of magic used on the Boiling Isles, witches and biped demons can cast spells through a sac of magic bile attached to their hearts. As witches pursue their educations, they are guided down academic tracks leading to eventual coven membership and magic specialization. Students start training in magic at the kindergarten level and continue to develop their skills across the educational spectrum. This training is accomplished at institutions such as Hexside and Glandus High. Witches require extensive education and training in order to master the system, allowing them to use magic effectively and safely. Witches invoke magic through the use of gestures, incantations, enchanted objects, potions, and elixirs.

These rituals restrain and provide order and direction to what would ordinarily be a chaotic force. Magic on the Boiling Isles is manipulated through a system of rituals. Magic is not known to be present in the Human Realm other natural forces exist, such as gravitation and electromagnetism, but magic is the only force that appears to be controllable through will alone. A spell can be simple or complex, depending on the degree of change the spell caster is attempting to accomplish. A spell, the most basic unit of magic, is an invocation that accomplishes a specific change. Magic, once invoked, has the ability to manipulate other natural forces.
