No Need!

Noah's main body continued to act as the 9th Infernal Lord at the Verittas Fortress, his gaze peaceful as he awaited the arrival of a huge force of Celestials.

His second clone that remained in the Infinite Realm was currently utilizing the feature of [Library] as he documented his abilities as well as the first stage of his skill trees in order for his subordinates to copy and learn them, contributing to boosting their strength by a wide margin as he wasn't the only one increasing in strength.

The feature of [Library] was a unique one, an ancient styled building that had the ornament of an opened book being erected near the center of the Infinite Realm that anyone can access.

Inside of this actual Library, there were different levels that all held varying skills from Noah, each of them in their own books that his subordinates could go in to touch and learn if they had the required level of strength.