[hmm the edge is risky but if he lets Stone have that line, he'll never be able to surround and capture. Best head that off at the pass.]

It is, or was, another world much like this one. Not the darkness, no, but it was a world not connected to the living world. Created by a demon of immense power, outside the flow of natural time. He was arrogant enough to believe himself greater than humanity but...well, we sure showed him in the end.

[but if he doesn't know what a demon is...?] Have you no demons among your many species? Mystics, gods, or anything of the like?