Before Quinn had arrived, and just after his short battle with Minny, Mundus had a great interest in a particular person on the field. Out of all of those there, his interest was in small Galen.
At times, during the fight, Mundus could feel a familiar energy. At first he thought that energy was coming from Wince. She was a dedicated follower and had similar celestial energy to Quinn due to where she had received her celestial energy from in the first place.
Soon though, he noticed that the energy was somewhat different, it was stronger than that of a dedicated follower, it felt more pure, like one's own, but at the same time it didn't seem like it was one from a celestial either.
Which was why Mundus wanted to investigate a little further, to see whether or not his predictions were true. To do this, he needed Galen to act out just a little more, so he decided to allow him to move in the Time Freeze.