User blog comment:Seieireppa/More info on Reverie for a Dying Star/@comment-26141862-20150731182635/@comment-1419424-20150731184720

LOLOLOLOL no. I already have his wish and his resulting ability in mind but that won't be revealed until towards the very end, along with a LOT of other relevant information.

Although... perhaps calling it an "ability" would be a bit misleading? ;)