If you follow the clues set up in the show, you'll realize that the MLP staff have always had this set up from the very beginning :)
Original "7th Element" video: https://www.youtube.com/watch?v=ZF4LeLGplqE
My sincere thanks to Paul Mize for submitting these ideas.
EQD Feature: https://www.equestriadaily.com/2018/08/analysis-theres-always-been-7th-element.html
My Little Pony Characters and Images belong to Hasbro and DHX Media.