For those who are not aware of Equestrian City it is basically a fan-made universe made from Deviantart user: DarkMalcontent, based on an alternate reimagining from Equestrian Girls: Rainbow Rocks. Entirely fan-made and not for profit, work, includes FanFiction, comic pages and an Wikipedia page. The fan-fic ideals combined with Spiderman: Homecoming are made for fun and is not meant to take anything way from Hasbro and Marvel. Although nothing belongs to me.
The ending of Rainbow Rocks changes ever so slightly in that a massive explosion known as The Event occurs when the Magic of Friendship collides with the Dark Magic of the Sirens at a