The supernatural powers of the Mother Earth Continent all relied on the existence of gods. If one wanted to change their profession, they had to believe in a certain god.
For example, mages had to believe in the Archmage God Charles, and it had to be the main faith.
After the class change, as the quality of faith gradually increased, they would slowly obtain the corresponding skills.
As for the other professions, although they also had to have a main faith, there were also sub-professions. However, because faith was not pure, no matter if it was the main profession or sub-profession, they would not have too high achievements, especially sub-professions. At most, they could only obtain one or two profession skills, and they were the most basic ones.
Therefore, normally speaking, the cost-performance ratio of a mage was higher because the Archmage Charles 'beliefs covered a wider range.
