Princess Celestia found herself in a rather unique spot. While meetings of all of Equestria's ruling princesses were not unusual, it was who had called it that was a first.

Twilight had sent a formal letter to Canterlot asking her and Luna to come to Ponyville as soon as possible. She had also asked Cadance to come from the Crystal Empire as well.

The haunted look in her former student's eyes told that something had happened to her recently. It reminded Celestia to some extent of the look that some of the Royal Guard had when returning from conflict.

But this was on a different level. Twilight showed no signs of recent battle or magical exhaustion from a Magic Duel. So then, what had happened to her?

"We are all gathered as you requested Princess Twilight. To what do you call this council?" Luna asked, holding back a yawn. It was way past her usual bedtime at this hour.

Twilight steadied her breathing for a moment before she looked at her fellow rulers. "Remember the magic surge recently at the Tree of Harmony?"

All nodded. Even Cadance knew of it. But she was as confused as Celestia and Luna were.

Twilight's ears drooped. "I know what caused it. I've met the one who cast that spell. Or rather, she found me."

Luna's brow rose. "She? This individual is a mare?"

Twilight nodded. "Her name, as she gave it to me, is Cosmos. But it's the name she chose to use. I don't know her real name. No one does."

Celestia's own brow rose. "I'm not sure what you mean Twilight. You make it sound like this Cosmos isn't a normal mare, aside from her magic."

Twilight shook her head. "She isn't normal by any definition we know. I only saw a small part of her, and it was enough. She let me see it. She wanted me to know."

"Why? What could she gain from letting you see that?" Cadance asked, concern in her voice.

"To prove a point. I called her back. I was the one who demanded that she explain everything that's going on in Equestria at the moment," Twilight replied. "The Tree of Harmony even warned me that it was a risk in doing so."

Her head bowed. "I didn't listen. I paid for it."

Celestia, Luna, and Cadance all shared a concerned look. They all knew that the Tree of Harmony could take on a form that resembled Twilight. It had done so once before.

"Then I say we find this, Cosmos, and teach her a lesson. No attack on a princess of Equestria should go unpunished," Luna said, a hint of anger in her voice.

Twilight shook her head. "Luna, we can't fight this. We can't fight her. This is a power we have no hope of standing against. I've seen what she can do. I don't want to see that here."

"Then what should we do? We can't just let her roam free, can we?" Cadance asked.

Twilight nodded. "I don't think we have much of a choice. She said she plans on staying in this universe to see where it goes from here. I don't know what she meant by that. But I'd rather stay on her good side."

Luna snorted. "I fail to see what is so bad about this Cosmos. We have faced far worse than her before and come out on top. She will be no different."

Twilight bit back an angry retort. It would do them no good to get angry about this. "Luna. You didn't see what I saw. Starlight's messing with time? I'd rather do that again than face that."

That put an end to further conversation for some time. All knew of her and Spike's misadventures through time with Starlight Glimmer and the effects of her messing with the Sonic Rainboom.

If Twilight would rather go through that again. then this was far more serious than any of them had thought.

"Where is she now? I would very much like to speak to her," Celestia finally said.

Twilight shrugged. "I don't know. She vanished into thin air, literally, when I met her. She could be anywhere or anyone. I don't even know of a way we can know it's her."

"Should we be worried about that?" Cadance asked. "It reminds me far too much of what Queen Chrysalis did before she was overthrown."

Twilight shook her head. I"m not sure. If Cosmos wants to be found though, then I don't doubt we will know it's her when the time comes. One way or the other."

Author's Note

Ah, the fun of writing 10th-dimensional beings. Who only obey one law, and that is their own. Better known as something else though.

It's whatever I feel like when I write them. That means show logic, or even Pinkie Pie's or Discord's logic has no bearing on them. Or just Cosmos in this case.