Replying...
Intro. this AU was created by "blueroxxie" on tic toc, the history starts milleniums ago, Celestia and Luna's mother was telling them a tale about a sprout of a flower that soon became the source of an infection sadly, it's back, but this story happens in the present, after the last episode of the series, after "The last problem".

My little pony: Equestria's downfall

@Eclipse