How to enter the magic abyss
Eldrian continued to train in this manner, using Tier 2 spells to get himself into the magic abyss. While doing this he made sure to rest enough in between each attempt so as to keep his fatigue from growing. Luckily it seemed to grow much slower and he could actually feel when he became too tired and it would lead to a fatigue level gain.
During these rest periods he would converse with Myropsis; who had to go all the way up to Tier 7 magic before she failed in subconsciously stopping the Magic Crystal's influence.
Luckily she had prioritized healing spells for her first spells when trying to reach a new Tier. She did not like being on the front lines and as such she normally learned healing, rejuvenating, and buffing spells first.