This is a idea I had in my head that involves the main six having a series of creepypasta nightmares. the main plot is they have become restless for the past three weeks due to the constant nightmares and they decide to put an end to the madness. They all gather in Twilight library to dive into their dreams and kill the being of each respective dream world. For example:

Rainbow dash: Sonic.exe
Twilight: Slenderman
Applejack: happy appy
Rarity either Jeff or eyeless jack
Fluttershy: lavender town syndrome
pinkie: ben drowned

GENRE: dark, crossover
NOT A COLLAB

This can be anyway the writer want the story to go, but it has to be scary for the sake of Halloween.