"Do the demigods here all minor in some obscure spell art?" Ash suddenly asked.
Death Frenzy glanced at him in some surprise, then nodded. "That's right. After all, the more obscure a spell art is, the more you can monopolize its resources. Almost every demigod who dares to remain in Illusion Hell has cultivated an ancient spell art that was lost long ago. There are even quite a few who forcibly created an entirely new spell art from scratch. There's a joke that if the demigods of Illusion Hell suddenly dropped dead, the total number of Spell Schools would be cut by at least half."
Ash was a little confused. "Is it really that necessary? Obscure spell arts are obscure precisely because they couldn't keep up with the times and were eliminated. Even if you pile enough resources into them, their effects probably can't compare to mainstream spell arts, right?" Death Frenzy shook her head. "No. That might be true somewhere else, but in Illusion Hell, obscure spell arts are far more powerful than mainstream spell arts. This is also one of the reasons the demigod wars in Illusion Hell are the most intense—because demigods can't see spell Miracles they don't recognize!" "Huh?"
"Demigods can only see the world they imagine, so naturally they can only discover spell arts they're capable of understanding," Death Frenzy said. "For example, if a demigod has no research into time whatsoever, then he won't be able to identify any time Miracles here until his Soul Body is damaged and he realizes he's been hit."
"The older and more obscure a spell art is, the more hidden and harder to guard against its effects become. Spell arts that can run rampant through Illusion Hell are either novel or ancient. Being popular and moderate means high