@f3nix I'm really glad that you liked it and that the story inspired you. I always see that as an great achievement. To be honest I don't know what Kunst is in the "Kunst Meister" nor where are the other 18 tesseracts.
I know what obsidian is and what tesseract looks like (the shape of the object) so I got the picture about the sand and how ideally it must have been created so decided to add a little dose of supernatural to it.