Moreover, the attribute boost from Star Soul Rotation was already equivalent to nearly ten points in all attributes when Sterl was in full power mode. In the future, as the quality of the arcane skill improved, this amplification would become even more potent!
Sterl opened the details page to understand the last part of the panel about proficiency.
The proficiency system for arcane skills was different from other skills. It was divided into phases. The higher the quality of the arcane skill, the more phases it had. For example, Star Soul Rotation had only two phases (Zero Phase, One Phase, Two Phase). Each phase upgrade could potentially introduce new benefits or enhance existing ones.
As for how to specifically increase proficiency...
Sterl sensed the cultivation method emerging in his mind and decided to give it a try.