A wizard is an arcane magic user, and arcane magic is drawn from life. On Athas, a wizard must start as either a preserver, or a defiler. A preserver takes only enough life from many sources to cast their spell and not cause damage. A defiler ravages the land for life, not caring about the damage they do, and in fact often wanting to cause more and more damage. There are some wizards who have learned to harness other energy to fuel their spells, most notably Sadira who can use the Sun. Others use the Cerulean Storms, and some tap into other planes, Shadow Wizards tapping into The Black, and some others tap into The Grey.