Although Billy was getting more and more impatient, he endured. Thanks to that, he had some new ideas. It was a bit risky, but to increase his powers even further, he decided to turn that body into a dungeon core, or at least one that had similar effects. While the spirits didn't want him to challenge their authority in that place, Billy could counter their powers as long as he used Personal Domain.
"As far as I can tell, making a human body become something like a dungeon core is very dangerous, but it will grant me similar powers to a ruler," Billy thought. "To face Uvish and to speed up my progress here, I can't find any other solution to the problem that is my magical power."