Muse.

In our world there are three types of people. There are the Mageia, the Muse, and the Meek. Mageia are the magic users. Everyone wants to be a Mageia. They tend to forget that the Mageia cannot use anything but simple spells until they form a bond with their Muse. The Muse rarely have any magic of their own, but gain some when bonded with a Mageia. Muse are the warriors, they fight to protect their Mageia. Finally the Meek, they are born with no magic, and no bonds could give them magic. In the old days, Meek used to be the least populous of the people, but the magic is dying. So Meek make up most of our population.