Rule objects were vessels that contained certain rules.
They were a specialty of the Ghost Domain—in other words, the Dark Mirror Domain.
Depending on the type, origin, maturity, and threat level of the rule they contained, rule objects also came in different classifications.
The Rule Stone Napoli had mentioned before, obtained from participating in some smelting competition, was also among the ranks of rule objects.
It was simply that the rules within Rule Stones were generally newly born and relatively shallow, making them comparatively less dangerous but more malleable.
As for the "Forbidden Stone" that had appeared this time, if it truly was a rule object, then the rule contained within it was already capable of autonomously influencing the outside world. Its rule maturity was definitely very high.
Moreover, the immense, grimly cold Ghost Domain aura it leaked was, even within the Ghost Domain, one of the most dangerous kinds of aura.
Therefore, Laplace judged that if this Forbidden Stone was a rule object, its threat level was enormous. It had most likely come from a disaster zone.
Because ordinarily, only disaster zones could nurture such dangerous Ghost Domain auras.
"Forbidden Stone, rule object... disaster zone." After hearing the explanation, Angel did not question Laplace's judgment. Instead, he asked in confusion, "According to Napoli, this Forbidden Stone was brought in by the Mirror-Holding Banshee. Why would she bring such a dangerous Forbidden Stone into the Artifact Embryo Factory?"
If the Forbidden Stone erupted inside the Artifact Embryo Factory and no one stopped it, the consequences would be unimaginable.
If the Mirror-Holding Banshee knew how dangerous the Forbidden Stone was and still brought it into the Artifact Embryo Factory, did that mean she harbored sinister intentions?
But why?
Angel could not understand why the Mirror-Holding Banshee would use the Forbidden Stone