"I'm okay!" The unicorn said with a little too much force. "I'm fine, alright?" She rubbed her eyes with a hoof. "I... The spell was supposed to summon a pony, but Luna summoned something else instead. Something potentially dangerous. And now there's a cosmic monster disguised as a pony on the loose, and it has a piece of Luna's soul. It's called an interloper, and it's unique from any other interloper dealt with before."