Once an Apprentice reached the peak and completed 13 basic will runes, they would be able to make a breakthrough to the Wizard level. However, in order to complete the breakthrough, they still needed to meet three conditions.
1. Knowledge.
The power of a Wizard came from knowledge. In order to advance to a Wizard, the first thing one needed to do was to gather and organize their own knowledge to form a complete spell system and build a formal spell model.
This was relatively easier. There were shortcuts that could be taken. They could directly apply the spell model built by others.
2. Purification of spiritual power.
The process of becoming an Apprentice to a Wizard was essentially a process of qualitative change of spiritual power.
