Twilight Sparkle has kept detailed notes on her magical ability for her entire life. Nopony's terribly surprised. After becoming the Element of Magic, an alicorn, and the Princess of Friendship, her abilities have changed dramatically. Again, nopony's surprised.

Twilight Sparkle is going to live forever. She won't be alone. The Elements of Harmony can never be separated by something as banal as time.

That surprises a few ponies. That surprises them a lot.