If I had to guess, it'll be like Premium Tickets except the only kamihime in the pool are the three that were chosen. SSR chance will still be really low.

Come to think of it, I probably should've voted for kamihime I don't have.
my thoughts exactly.. well, i voted for ctulhu, since i dont have her, and i hope that neither Sol nor Amaterasu will make it in the top 3...