Princess Luna's Lunar Stallions are an elite guard force of seventy, the descendants of the originals from a thousand years ago. Her lover leads them, and they've begun to flourish and be accepted by society. But now there's a new super-power in Canterlot, and she's killing the criminal ponies she catches rather than arresting them. The descendant of Luna's avatar of WAR has emerged. Her ancestor was the one mare to ever go into battle with the Lunar Stallions, the Moon Champion. Can the Lunar Stallions stop this killing machine? Who is she?

A story based off of the song titled "Killer Queen" by Queen.
Can't tell you too much or else I'm spoiling the story.
WARNING: Contains references to "Cupcakes".
If the readers want, I can expand it.

Being a changeling has its benefits, but when a changeling leaves the nest to live a normal life away from the tyranny of the queen, how long can he keep his secret in a world where he is hated? How long can one pretend to be somepony they aren't?

The now-famous first story of the Lunaverse!

This is the story of Trixie, the Element of Magic and the personal student of Princess Luna. It has been some months since this unicorn moved to Ponyville to learn about the magic of friendship, and, more specifically, how to not let her abrasive personality drive away the friends she does make. So far, she has succeeded, becoming a welcome part of Ponyville life, and as such has decided to put on a magic show for Ponyville during the Eventime festival, the celebration of the spring equinox.

However, a certain purple-coated unicorn seems determined to ruin her fun, and everypony elses'. This unicorn has traveled far to learn as much about magic as she can, and was excited to learn at the hooves of the Element of Magic herself. What she finds in Ponyville, however, leaves this purple-coated unicorn...disappointed. She resolves to take drastic steps to show Trixie what real magic is all about!

...this could end poorly.

Now has A TVTropes Page!