A Destiny Crossover.

Warlock Aron Williams and the Speaker had realized the dire situation the last city on Earth was in. The forces of the darkness were growing stronger and through efforts of the Guardians the Traveler was equally regaining its strength. A constant balance. One side not over coming the other. With interstellar travel resulting in failure for help the Speaker believes help may be found in an alternate universe. If only returning home was as easy as getting there.

Twilight goes to Best Buy since Celestia replaced every computer in Equestria with something from Apple. Twilight's not too happy and decides she could make a better decision herself.

When TFS collides with the universe of ponies all hell breaks loose and its a good thing I wrote down what happened.

Oh my god this thing got featured! Cool. (6/19/14)

I inspired something! Daughter of Darkness It's really good, you should check it out.