When he had worked years upon years building his runic knowledge from the basics, it was not only the knowledge of runes that he learned, but the true essence of spells and mana itself. It helped him in creating a runic tool that could even hold a piece of empty real-life outer space inside. He had used it to make a true portable mana generator—but this wasn't the time to go into details of that thing.
But it was a thing he had made with the secret of runic language unveiled before him. Similarly, he and the Prince had also debated the possibility of making a living, evolving runic tool that could also be used as a powerful shield while acting as a potential artificial mana core inside a living body. It could form any shape; Damian could imbue it with runic spells anytime, using it as any runic tool he wanted, even weapons. And it would never be damaged by mana overuse because it would be constantly evolving and rebuilding itself inside him.
