Magic in the World of Erthos

Magic, or Essence, is a fundamental part of the universe. It is possible to manipulate it to cause certain effects or Spells.
Wizards study hard to understand the nature of Essence, the ways to manipulate it, and how the universe is structured. Through this rigid study they are apple to manipulate it.
Sorcerers are able to manipulate the Essence within themselves.
Clerics worship certain Chara Spirits and gain spells through this worship. Druids are clerics who worship nature Spirits.
Channelers are a rare group of people who are able to travel the Eternal Domain by separating their Essence from their Bodies and making deals with Chois Spirits. They mix their Essence with that of the Spirits to produce magic.