All magic in the world draws upon the six Primal Sources. These are enormous, powerful entities of the natural world: the Sun, the Moon, the Stars, the Earth, the Sky, and the Ocean. A mage can draw upon these Sources to cast different spells; for example, drawing from the Sky's Primal Magic allows a mage to cast wind and thunderstorm spells. The magical creatures of Xadia are all connected to a Primal Source, and as such, their powers and abilities reflect that source. Each magical creature in Xadia possesses a connection with their source, called an arcanum. This is described by Lujanne as, "the secret of the Primal, or its meaning."