Twilight Sparkle, Rainbow Dash, Pinkie Pie, Rarity, Fluttershy, and Applejack, all together in a physics sandbox where they're essentially invulnerable, what could possibly go wrong?

Three Worlds- My Little Pony, Team Fortress 2, and Skyrim. What will happen? Everything is not in the right place and things just got real... Or did it? First a boom, and then a shout, and finally a mistake in a potion. Everything is a mishmosh of derp, but what kind of derp will it be? (Has language and is my first third person fiction. This story contains both POV's of Team Fortress, Skyrim, and My Little Pony. May contain mild comedy.)
Image Credit- To whoever made it

An attempt to break new ground in the world of magic goes terribly wrong for Twilight and the Mane cast find themselves with the wrong abilities. Can they deal with this change? Can Twilight set things right without magic? And what powers did Pinkie get?

((funny story, I wrote much of this prior to the release of season 2 and so some of the magical happenings are rather strange coincidences.))