Fandom Crisis

Fandom Crisis! is a My Little Pony Friendship Is Magic fan-fiction by Mr. Boltitude.

Nyx has been having horrible nightmares. A tall faceless pony stalks her in her dreams. Then one morning, a crazy stallion in a blue box crashes into the library saying he has a solution. Little does anypony know her dreams are terribly real, and will lead to an adventure unlike any other.

This fanfic contains examples of:

 * Crossover: Between other My Little Pony Friendship Is Magic fanfics of all things. Stories crossed so far include Past Sins, On a Cross And Arrow, as well as some more-obscure fan-concepts such as Slendermane, and Doctor Whoof
 * Recursive Fanfiction: Described above in "Crossover".
 * Rule Sixty Three: After a trip in the TARDIS, the cast finds themselves in a universe where every colt is a filly and every mare a stallion.