People are either born ordinary, or magic-wielders. Those who are born ordinary can resort into using martial arts or weaponry. Going inside the dungeon is a different case, since because of the challenges inside it, one could not stand if he doesn't know how to protect himself. Once cleared, he will gain a power par with a magician, and then he can finally do magic (that is related to the Djinn he owned), and can even Djinn Equip (with the weapon, or as a whole body). Magician-born people are those who can control their magoi freely that they can control the elements surrounding them. :)