The greatest trick the Great and Powerful Trixie ever performed was convincing all of ponykind that she was a mere unicorn. Years later, Princess Celestia and Trixie have a discussion by Twilight Sparkle's grave.
The code of the alicorn is that only those lucky enough to be born that way will stay immortal. Those who ascend have the same life expectancy as any other normal pony. ["Will you still love me when I'm no longer young and beautiful?"]
Celestia loves Twilight Sparkle. That is a fact, an indisputable constant of the universe. What that love means, however, is much less certain. The love of a teacher, the love of a friend, or the love that Celestia dares not name.
To absolutely no one's surprise whatsoever, Twilight finds out she's immortal. Now, if only she actually paid attention to what the Princess told her. It would save everyone a lot of time.
In order to save her friends from death, Twilight sought out a means to give them immortality. However, Twilight didn't know the fate she would bestow upon them would be worse then death.
Have you ever imagined that one day you would wake up in a strange new world in an even stranger new body? Well I never have but it still happened and now I am running around in my OC’s body in a land I thought was nothing more than a cartoon