There seems to be some saltiness about Shining being immortal, as it makes Cadance seem pushy and selfish or something. That wasn't my intent, and to be perfectly honest, it was a throwaway line that I included on a whim. I really don't care either way, so if you think Shining being mortal would give Cadance a better motivator to do the time shenanigans, then I'll change it.
Badda boom. Fix'd.