"I can easily trapped them, but dealing with them is the problem," Alros mused, as he looked at the gathered Illusion Butterflies. Even when they did not create any illusion consciously, their gathering location already looked like it is warped, the side effect of a colony of Illusion Butterly making their nest in the area.
The good news is that the colony numbered around 200, maybe even more. He would only need to deal with one colony instead of two. The bad news is the numbers. The butterfly monsters seemed to have a synchronize effect. The more of them in an area, the stronger the effect of their illusions, making them harder to deal with.
His demonic aura, the one thing he hope to use at such moment, would barely work, as they seemed to be able to use the illusion to block his aura.
He did not know how that work but he put it with the bullshit that is magic.