Imaginary Troubles

A bullied Unicorn filly named Sweetie Sweet, is having a horror first day of school when Diamond Tiara and Silver Spoon consider her worth their time to haul insults and make fun of the fact she has no cutiemark and an abnormally large horn for her age. Sweet cried running away from shcool and hides alone in the forest of everfree. However, she made herself an Imadginary friend from her sadness and inexspearienced magic, and made an Alicorn named Princess Sunshine, an alicorn that's a simular recolor of The Laurn Faust Alicorn, that cares for Sweet very much, to the point of seeking to punish any who wrong her. When Tiara and Spoon once again hurt Sweet's feelings, Sunshine angerly creates magic clones of horror move monsters, sci-fi villains, even MLP:FIM's main villains like Nightmare Moon, Discord, Chrysalis, and King Sombra to destroy Tiara and Silver! When Celestia summons the lougers about a large army of iconic film villains and of Nightmare Moon, Discord being evil again, and the returns of Chrysalis and Sombra, the Lougers were understandingly stumped when the real Luna and Discord were still present and good, so they suspect something is going sour in Ponyville... Imadginingly sour.

(This is the episode's main theme.)