A Ponyville Hearth's Warming

Princess Celestia shot a huge beam of sun energy directly at Frost's face, causing him to howl with pain. The spirit lit his horn and a wall of ice blocked Celestia's continued attack. "You may move the sun Celestia, but I am the LORD OF WINTER!" A huge wind buffeted everypony back against the castle walls.

"Looks like we'll have to step it up!" Celestia yelled in a commanding voice. "Twilight you're with me! Rainbow and Fluttershy try and destroy as many of those snow clouds as you can! Rarity, Applejack and Pinkie, give us some cover fire!"

"Sure thing Princess!" Applejack agreed. Pinkie Pie grinned and pulled out her party cannon from seemingly nowhere and Rarity levitated some ice from the ground with a vengeful expression.

Starlight and Spike ran out of the castle to join them. "What about us?" Spike panted.

"Spike remember how you destroyed that ice cloud at the Equestria Games? You think you can do that now?" Twilight asked.

"Well sure... but the clouds are up there and I'm down here." Spike answered with a puzzled expression.

Rainbow grinned. "Not for long!"

Twilight levitated a surprised Spike onto Rainbow's back. "Um Twilight are you sure about WOOAAAAHH!" Rainbow took off leaving behind a cloud of vaporized snow.

Grinning, Twilight turned to Starlight. "You ready?"

"Oh yeah!" Starlight replied with a grin of her own. Celestia, Twilight and Starlight all took off toward the sky, shooting beams of magic at Jack.

Fluttershy gulped in fear, but began to fly towards the mass of clouds as well. She saw Rainbow and Spike zipping around, kicking and vaporizing the aggressive snow clouds. Attempting to do the same, Fluttershy gave the nearest cloud a halfhearted kick. Rather than disappearing, the cloud thundered angrily and hurled snow and ice. Fluttershy yelped and flew away as fast as she could. The cloud gave chase, flying after her with palpable fury. Out of options, Fluttershy dove towards another snow cloud and hid inside, hoping that her pursuer wouldn't be able to find her. She felt a sudden wind around her as the cloud she hid in ejected her out into open sky. Shivering in fear, Fluttershy found herself caught between the wrath of two angry clouds, racing toward her from opposite directions. Flapping her wings as hard she could, Fluttershy shot upward, hearing a loud crash below her as the two clouds collided with each other and dissipated.

Sighing with relief, Fluttershy looked on at the rest of the battle. From the ground, Rarity, Applejack and Pinkie were dissipating dozens of clouds. Applejack whipped at the vapory villains with a lasso, crying out, "Take that ya varmint!"

Rarity used her magic to throw ice at the invaders with equal ferocity, angrily yelling, "That's for my fabulous tree you fiends!"

There was a loud boom as Pinkie's cannon fired cotton candy at the clouds, causing them to stick together and explode with snow buildup. "Mmm... candylicious!" Pinkie said happily as she scooped some of the pink candy into her mouth.

Meanwhile Starlight, Twilight and Celestia were engaging Jack himself, shooting powerful beams of magic at the spirit's giant form. The magic seemed to have little effect, merely making Jack angrier and angrier. He summoned blizzards, shot ice and rained hail, but the three ponies were simply too fast. They zipped around him, casting spell after spell with little success.

"Why isn't this working?!" Starlight yelled over the storm.

"I don't know!" Twilight yelled back. "My most powerful spells aren't doing anything!"

"The only way he could become this powerful is if he was feeding off of negative emotions!" Celestia answered. "But how is that possible?! The spirit of Hearth's Warming should be making him weak!" She shot a well timed bolt right into Frost's eye.

"Argh!" Jack screamed. "Windigos! Destroy them!" he commanded. The air erupted with howls as hundreds of the translucent beasts charged toward them. Everypony swerved and dodged the windigo's icy breath.

The windigo's only seemed scared of Spike, whinnying with fear at his fiery breath. "Yeah come on!" he threatened. "Who wants some more huh?!" Rainbow seemed to be doing her best to keep them moving, but the cold was slowing her down.

Fluttershy heard a loud winnying nearby as two of the ice spirits galloped toward her. She stared at them hard, trying her best not show fear. Most animals would lose their aggression if they realized you weren't afraid, and would be more willing to listen. Fluttershy hoped the windigos worked the same way. The spirits seemed to hesitate, slowing their gallop to a trot. They looked at each other in confusion and began backing away, whinnying loudly. This time, Fluttershy thought she heard some sort of guttural speech in their cries. She caught the words "the Fire still inside her!"

As her two would be attackers galloped away, Fluttershy pondered for moment. "The Fire still inside her?" What did they mean? She had seen the Fire of Friendship sputter out with her own eyes! What were the windigos still afraid of?

In the distance Fluttershy saw her friends putting on an impressive display, holding their own. A circle of sun fire emanated from Celestia's horn, vaporizing any windigos who dared to even get close. Inside the circle's protection, Starlight and Twilight shot bursts of fire from their horns, destroying wave after wave of windigos that came to do battle. Despite their efforts, the windigos simply seemed to keep coming, re-forming themselves out of the snow clouds.

"ENOUGH!" Jack yelled, stomping his hoof angrily. Fluttershy felt the very air around her thicken as if responding to Frost's command. Without warning, she felt herself hurled forcefully from the sky. She flapped her wings, trying with all her might to stay airborne, but it was no use. Luckily, Fluttershy managed to land in a thick pile of snow near the castle, shaken up but not injured. She heard a loud crash as Spike, Rainbow, Starlight, Twilight and Celestia plummeted into the snow beside her.

Applejack galloped toward them with Pinkie and Rarity by her side. "Are y'all okay?" she asked. Everypony managed to get to their hooves and nod in response.

The sky boomed with Jack Frost's mirthful laughter. "Did you pathetic little ponies think you could stop US? We are forces of nature!" The windigos howled in agreement, gathering by their master.

"Y-You will not prevail." Celestia managed, her teeth chattering due to the cold.

"After we freeze you, there will be NOPONY to stop us! Everypony in Equestria will be demoralized at losing their ruler, providing a feast of emotions for us!" His minions howled with glee, some licking their lips in anticipation. "We will blanket this world in eternal winter, and rule forever!" He pointed a hoof at them, and Fluttershy noticed ice begin to creep up her legs, showing no signs of stopping. Her friends began to suffer the same, struggling uselessly as the ice began to encase them. Jack giggled squeakily. "So ends the LAST Hearth's Warming in Equestria's history!"