Noland Lee and Denise Green communicated through "Soul Perception" for a few minutes, and he realized that he had been on the wrong track.
Ethereal beings have their own ways of enhancing "Basic Attributes," distinct from those of human wizards.
Simply put, ethereal beings rely on the act of "devouring" to increase their strength.
Anything that exists in the form of a soul can become nourishment for Nolin.
For example, the Undead Cult's Ghostly Crew, the Soul Shaping Society's Soul Beasts, and so on.
Noland took control of these things and handed them to Nolin.
She could then rely on her instincts to devour the other party.
The effects, advantages, disadvantages, time consumption, and side effects of the devouring act were things Noland needed to inquire about from the wizard forces specialized in studying souls.
The Soul Shaping Society, an entity he held a grudge against, was one option. It was a wizard force specialized in extracting souls and crafting Soul Beasts.