>>42492268
>walking around on Earth
>anon's soul gets sucked the fuck out
>he leaves his human body behind, dead and probably face down and ass up
>get shunted into an alicorn body
>he freaks out
>his autistic screeching amplified by the giga-levels of alicorn magic accidentally nuke Chrysalis and Sombra
>accidentally flies away, badly
>the two villains are left in a smouldering crater of rubble, wondering what the fuck happened
>anon, now anonicorn, meanwhile ends up crashing into, and through, Canterlot Castle
>gets found by Celestia
>he knocked himself out
>new alicorn peaks her interest
>gets to stay in the castle if he behaves
>she finds entertainment in how he ruins the nobles' expectation with his inability to read social cues
it's bare bones, but it's the best idea for a set-up I could think of if someone else wants to take a crack at anonicorn