The doggo/dybbuk with the upside-down head from the movie The Unborn visits Fluttershy. She's frightened. Because of course she is.
A kinda-sorta-maybe crossover with the horror film The Unborn. I've never seen it, but I hear it's pretty bad.
Edited by James Fire, who is thankfully not a Dybbuk.
Inspired by PPPPPPPPPPPPPPPPPPPPPPPPPPPPP. Seriously, check it out. It's an amazing story.