It is not painful at all; actually I can barely feel it. I do not know what happens to the mass - I would rather not think about it, to be honest. As for the incantation, I think you would be interested; I still do not know what language it is in, if it could even be considered language, but certainly complex. There are certainly runes which correspond to certain sounds, and they appear slightly differently on different days, and I have only worked out how they are said by trial and error and the help of my future self, which is a paradox I also would rather not think about.