As the berserk sword arc filled with a minuscule amount of chaos energy was being closer to the moment of being fired, weird things started to happen.
First of all, the struggles of Krisatarus grew more intense as its body was shaking around even more, as if obtaining a new lease of strength. This made the bindings that Wang Qian cast less effective as they may collapse anytime soon.
The second thing, however, was something that Wang Qian find very strange. The black mist that enveloped the horns of Krisatarus, started moving around again as it reacted to the presence of chaos energy within the berserk sword arc.
This led Wang Qian to think that the black mist had some kind of connection with his chaos energy, or to be even more precise, the two might come from the same origin.