Weather Pony Dash

"Yah what?!" Applejack exclaimed as she watched the little princesses walk into the library.

"We had to. She was out of control. Nightmare Moon is now too powerful." Celestia said as she sat next to her student.

"Can't we use the magic of the elements against her." Twilight asked.

"Not with Rainbow Dash like this. She may be the Element of loyalty, but the dark magic has overpowered her." Luna replied.

"Poor Rainbow." Fluttershy whispered.

"Indeed. But if I remember correctely, there should be something to weaken Nightmare Moon's power over her."

Twilight's ears perked up. "What?! What is it?"

"We dont truly remember but some books in the Canterlot Archives should tell us." Celestia rubbed her chin.

"Come on!" Pinkie bounced up from her seat.

"wait!" Luna called.

"What?"

"With me and Luna as unicorn and pegasus, "Luna fluttered her wings as Celestia spoke,"No pony will recognise us."

"How is that a problem?" Rarity asked.

"Think about. Two average mares claiming to be the rulers. Not exactly a great idea." Luna huffed.

"But you are the rulers. You've got the cutiemarks, the voi-okay maybe not." Twilight sniggered as Luna gave a stern look.

"I cannot believe Tia's voice sounds the same, but I sound like Rarity's sister!"

"What's wrong with my sister?!" Rarity demanded.

"Nothing. Her voice of fits her because she is a filly. What am I, about over a thousand years old!"

"Alright! Calm down. Twilight, you and the others can access the archives. I and Luna will keep an eye on Rainbow." Celestia looked at her student, at now an eye level rather than looking down on her.

The others nodded and ran out.

Celestia sat next to her frustrated sister.

"I hope they'll find the book. Nightmare Moon must be destroyed."

"They will, little sister. Have faith in them. Not only for us, not only for Equestria, but Rainbow Dash too."

They both looked over a pink bubble.

In the bubble was a unconscious pegasus.

Twilight put up the bubble to slowen the dark magic.

However, stage five was nearing.

"The process of physical appearance changing." Luna's head drooped.

"Don't worry Luna. She will be fine soon. This process will be slower than yours as you were already an alicorn."

"But Tia! Stage five! Stage one was yesterday! Mine took two weeks, not two days!"

"Keep calm. Twilight and the others will find that book."

The two transformed princesses looked over at Rainbow.

Her wings slowly fading black. Her hair, midnight blue. Her cutiemark...was no longer a cloud with a tri-coloured lightning bolt. But a white lightning bolt with chains across it.

"I pray on the glimmering sun and the marvelous moon, that they will find it soon. Otherwise, Equestria will no longer be the land of love, peace and harmony."

"But a land of fear, plague and death. Something that should never happen." Celestia's horn glimmered and so did the bubble. "Nightmare Moon's magic is too quick and powerful for Rainbow. I can feel her body weakening."

"Sister, can you see loyalty inside of her still?"

Celestia closed her eyes.

She could hear whispers.

"My friends need me. I need to help them. They're my family, the one I never had. I must help them. I don't care if I die, as long as they are all safe. Nightmare Moon will not hurt them. I must help them. I must. I must."

"Well?!"

"Yes. I'm surprised as well."

"Why? What's wrong Tia?"

"Not what's wrong, but what's right."

"Huh?!"

"Rainbow's element magic is starting to fight back."

"But?"

"But, it's not strong enough yet."

"How can it-"

"Shh. Luna, it may not be strong now but soon. Loyalty is the strongest."

"I thought magic was the strongest element."

"Second really. It overpowers the other elements. However, I have a feeling this pegasus may carry all the elements."

"What in Equestria do you mean Celestia?!"

"I mean that, she carries loyalty, kindness, generosity, laughter, honesty."

"And magic?"

"She holds the magic of friendship in her heart."