For ordinary Mages, advancement is not so easy. If their personality is too erratic and they cannot endure prolonged and tedious study and meditation, or if they simply lack even the most basic skills to become a Mage, the likelihood of progressing further down this path becomes even lower.
Even for the Elf Clan, where everyone possesses a certain spellcasting talent, it's not easy to become a qualified Mage after long years of accumulation. It's only because the Human race has a sufficiently large base and an overall above-average intelligence that they can rapidly accumulate such a vast Mage group through the advantages of natural selection.
The core factor hindering the number of Mages lies in talent. However, these things are laughable to the autonomous Puppets. Sharing Kael's spell experience, Kael's level cap is their level cap. As long as there are enough Level Experience Points, advancing is as simple as drinking water.
