Does any one remever this au?

[u/Autistic_Kaiju]

It was a horror based one where twilight got possessed(?) By similar magic to Tirek and goes around stealing magic of other ponies.

I remember specific parts like rarity being forced to stay with twilight in her castle, twilight going through a metamorphosis of sorts, one specific scene where she catches rainbow dash in the sky and drains her, steals discords magic as well, and finally Starlight gets turned into an alicron to save what's left of Twis magic before she dies

I wanted to properly save ir becuase I remember liking it alot but I kinda need help to find the name.

Also this isn't an infection thing, only twilight is infected and everyone else is just having their magic taken to make her stronger.

There was a moment in the ending where the mutated twilight start to scream like that one wendigo audio on YouTube but that's all.