While wandering through a meadow, Fluttershy finds a large crate with a strange device inside. She unintentionally activates it and marvels at the sheer power it possess. She then proceeds to use the device to her heart's content.

Doom and Mlp crossover. Don't take it seriously just a random story. Also I'm using the fan name Big F@#king Gun over its real name, just because it works better for this kind of story.