A Pony Trailer Video.
"It is one of five mares..."
Tinker Tailor Soldier Spy's 1st trailer, redone with ponies.
By the way, why are they called trailers when they come before the movie?
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My Little Pony: Friendship is Magic is © Hasbro, all art/writing is © to their respective artists.
Tinker Tailor Soldier Spy © StudioCanal and Working Title Films

Video is legal under fair use:

~FAIR USE~ Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.