Minos' Mass Destruction Weapon 2

Minos took a slightly calmer breath and said. "Hmm, there's about a 90% chance he died. But considering that he underestimated me, I doubt he ran away when he saw me disappear. So, he can only be dead now."

Minos' powers obviously limited the fusion of Devouring Art and Chaotic Gravity. Thus, that level 70 man definitely could have escaped if he had reacted in time.

Unfortunately, once inside the event horizon of that black hole created by Minos, everything happened so fast that even someone outside the limits of that young man would suffer. 

But the main problem was not the power of Minos' fusion but the special characteristic of the black hole, to 'devour' the mass in the surroundings and become stronger.

Because of the amount of matter and spiritual energy in the bodies of those cultivators, the black hole unable to devour a Spiritual Saint had evolved into one capable of doing so.