Some fun facts for all ya'll:



Twilight Sparkle was only a unicorn for 65 episodes. Not counting Magical Mystery Cure twice(and not counting any specials/EQG movies/etc), she was an alicorn for 156 episodes.



The Golden Oaks Library existed for 91 episodes. It was replaced by the Castle of Friendship/whatever that damned thing was actually called, that lasted for 130 episodes.



Twilight was an alicorn and had a castle for longer than she was ever a unicorn or had a library tree.