 The world he created wasn't as well made as Earth, because it was his work alone.Now, at the time of the book's story, the rest of the Sidhe barely remember him as Tonn and worship him as Adonna, believing him to be a god.He is growing tired, though, and knows that his world will collapse sooner or later, so it will have to be reunified with Earth so the Sidhe can escape Sidehedark's destruction.