Filth-Earth Demonic Hounds (4-in-1)

As time passed, Roy's Alchemy became famous among the apprentices.

The academy also passed the basic approval process, agreeing to offer related elective courses in the new academic year and use the new apprentices who came later as test subjects.

Funding, resource allocation, and even trial missions were adjusted accordingly.

This was the academy's support for his career!

Roy himself had not been idle either, further refining and clarifying his theories.

In the Book of Souls, he explicitly mentioned that the reason this Philosopher's Stone, which was bound to its owner, differed from external equipment was that its essence originated from Soul Traits.

During the refinement of such an object, part of the Soul Crystal would become something akin to a divine core or dragon crystal.

In essence, it was close to the inner elixir, Golden Elixir, and even Nascent Soul that he had known in his previous life—a part of his own soul.

Therefore, ordinary attribute equipment only provided superficial assistance. Only this could improve one's essence and achieve supernatural power returned to self.

But precisely because of that, it possessed a "unique" trait.

To a certain extent, it displayed an independence similar to that of a legendary or even true-god-level divine core.

The gemstone-like appearance visible to the outside world was the essence of one's soul, and even more so, a projection of Spiritual Power Manifestation.

"Just as crystals require a certain concentration, or conditions such as temperature and pressure, it also has certain requirements for the caster's Soul Quality and Spirituality Scale.

The conclusion reached for now is Low Silver, along with Spiritual Power measuring above 3.2...

This happened to be the level of a mediocre apprentice's aptitude and an Advanced Apprentice who had manifested all twenty-four Will Runes and had only just entered the manifestation stage.