The Mane-iac has a reason, a method to her madness, and one that will shock the Mane Si-er, the Power Ponies to their core.

Because it's not exactly evil, and aren't we all crazy when we're in love?

Additional tag: [Cute]
Rainbow Dash, age three, spends a heartwarming day with her family.
One cute filly, two loving parents, and plenty of time to themselves. What adorable, everyday adventures will they get themselves into? First thing in the morning, Rainbow decides that she is going to be a cat; it only gets cuter from there.

(First person Rainbow Dash)

Author's Note
Anti-Disclaimer: I take full responsibility as the author for any and all side effects that come from reading this story.*

*Side effects may include, but are not limited to: diabetes, heart attacks, cuteness induced head trauma, the feels, d’awwwwwws, and artery clogging sweetness.
Note: Any actual medical conditions are not my fault and I hope you recover quickly.

Pre-read by Sethi and Hopeless Appraisal

On a dark night filled with even darker magics, an insane cult attempts to give Nightmare Moon a body and life of her own, utterly separate from Princess Luna. But, when the spell is interrupted by Celestia, something unexpected is created.

Now, a little black alicorn filly named Nyx finds herself living under the care of Twilight Sparkle, only to be haunted by memories and emotions from her past. Is she Nightmare Moon reborn or is she simply a doppelganger with a soul and mind of her own? Can Twilight Sparkle protect Nyx from those who refuse to see past her dragon eyes and black coat?

Or, will Nyx be forced to inherit the sins that may not even be hers and become the greatest evil Equestria has ever known?

Luna has had enough of Celestia's games, and has found the perfect means of revenge. Using a long-forbidden spell, she transforms her sister into little more than a small filly, all so she could pull the greatest prank ever. Unfortunately, she soon learns that before you fool around with dangerous magic, you really need to read the fine print...

A sequel can be found here.

When your life is as dull a gray as the world that surrounds you, the mundanities can make it all seem meaningless. Sometimes all we need is a little color -- or six -- to reintroduce us to what truly makes life worth living.

*6-16-2017 Edit, added Rainbow Dash tag because it triggered knighty.*