Vincze and Bhatmelec were on their knees with their pool of blood right under their feet. They had been trying to improve their skills by creating a paradox from Bhatmelec's skill [Ethereal]. Mykel explained to them as they watched how those two were trying to make a paradox, and that it all began with Bhatmelec's skill.
Bhatmelec's skill was to injure Vincze from the future since she could travel from the future to the present. The moment Bhatmelec injured him in the future, Vincze used his skill, [Sagacious], and prevented that future from happening. Since the future that Bhatmelec created didn't come to reality, that future created another reality where Vincze was wounded.
Since they both had been doing that for hours, the atmosphere around them became so dense and suffocating. Nobody was allowed to get close to them because they could be sucked into another reality and would be problematic.