During a magic "show" by Discord, he summons the evil Colonel H. Stinkmeaner, and Stinkmeaner then proceeds to whoop the asses of the mane six. Why? I'll get back to you on that...
A history of the time Princess Twilight Sparkle got fed up and decided to overthrow Princess Celestia. Only Twilight would make an appointment to stage a coup.
Discord's really done it this time, his magic decides to go and be a cliche fanfiction plot device; displacing a powerful warrior from the land of tamriel.