The episode premiered on February 16, on The Hub. In the episode, the destinies and cutie marks of Twilight Sparkle 's friends get switched around, forcing Twilight to create a magic spell of her own in order to correct it. The title itself is a reference to the Beatles ' album Magical Mystery Tour. Part of the episode focused on Twilight Sparkle becoming a princess and transforming into an alicorn.
My Little Pony, Season 3, Episode Magical Mystery Cure, Review | Den of Geek
It aired as the final episode of the third season and the sixty-fifth episode overall. It is the first episode to feature Twilight Sparkle as an Alicorn and the last episode to take place before the spin-off film My Little Pony Equestria Girls. Show storyboard artist Sabrina Alberghetti helped with some clean up on the episode  and said in late December that she used "what little power" she had to throw in one of her favorite background ponies , who she specified is not hers. In the summer, musician Andrew Stein played mandolin for show musician William Anderson on a short cue for an episode of the third season,     and Stein wrote in early November that "Apparently it's in the season finale this year"  and that it "almost didn't happen" as it was "extremely lucky" that their schedules coincided for it;  however, Anderson ended up not having any role in the episode at all, as Daniel Ingram and Steffan Andrews received the only music credit.
My Little Pony, Season 3, Episode 13: Magical Mystery Cure, Review
This episode has generated quite a bit of response from fans. People have either been absolutely head over heels for the season finale or left just shaking their heads. Unfortunately, we find ourselves in the latter camp. Season 1 ends in the Grand Galloping Gala where the Mane Six seem completely out of place, but manage to liven up the event for everyone. They all have an awesome time.
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