Demon Experiment
Faulen Island, the basement of the wizard tower. Within the negative energy pool.
This was a place where wizards conducted taboo experiments, with dimensional spell formations specifically to summon demons and devils. Hence, a powerful binding formation was an essential protective measure for this place.
Researching demons and devils! Obviously, once priests or paladins found out, he would become a wanted man, a sinner that all the humans would call out.
It was a pity that most high-ranked wizards had to make use of negative energy to advance. There were few who followed some lesser-known paths. After becoming a legendary wizard, those madmen might even completely disregard the gods and brazenly go against their ban, becoming involved in the domain of arcane spells.
In the eyes of those strictly forbidden scholars, the gods were merely a group of powerful wizards. Who exactly was up there was a function of luck and one’s birth.