After being satisfied with Siverra's monster's damage output he traversed the islands until he was at the edge. Being met with the pitch blackness of a void he struck an idea.
Siverra made himself fly downward, to the blackest black.
Interestingly enough, once reaching a sufficient descent any light casted with normal magic would be unable to penetrate the thick black nothingness, but using his powers as a God he was able to create a light.
There wasn't really anything interesting, nor was there a presence of a sky. This only made Siverra feel that this area would be the ideal location. In this wide dimension, world, whatever it was, he would be able to hide down here. Above, there would surely be many different creations by different god's and as well as the god's themselves...
Siverra then opened a dark purple portal that had shadows dancing around it. This was more of a sudden spur of the moment idea, one that would change everything if it was able to work..
