Due to Anvis's series of actions earlier, the Nightmare Spirit King, who was supposed to be ended by Fiona, was preemptively ended by him instead.
Logically, such an act of prophesizing first and then actively changing destiny, which caused a huge deviation in Fiona's original destiny, should have resulted in a severe backlash from the powers of destiny against Anvis.
However, since he was already involved before the prophecy, and Fiona needed an enemy to stimulate her own power awakening, in order to achieve the effect of this burst of the Power of Destiny.
As a result, Anvis, the direct cause of the major changes in the original plot, was once again watched by the Net of Destiny and was honored to upgrade from an important supporting role to a major villain, now arranged by destiny, to be defeated by a young girl in the future.
It's truly a case of the Dragon Slayer turning into an Evil Dragon.
However, Anvis has gotten used to this kind of plot development.