The girls were barely back to Canterlot when they got news of a flying beast ravaging the city. An cameraman filming the monster on board of an helicopter was diffusing the events live. Sunset immediately recognized the creature they saw in that underwater cave a while ago.
“No way, that can’t be...her...” said Sunset, shocked. “This is the dragon girl we met in the treasure cave a while back!!”
“Why is she burning down our city?” asked Applejack. “What have we ever done to her?”
Dissimulating his identity behind a robe and a mask, Moonlight appeared in front of the girls.
“You took away her favorite plaything” he answered.
“Plaything?” Asked Sunset.
“Stygian, aka the Pony of Shadows” answered Moonlight. “You see, my sister was quite attached to him and ever since you took him away from her, she started losing her mind. And today, she officially lost it...”
“Wait, she’s your sister?!” asked Sunset.
“I can’t bring myself to hurt her” said Moonlight.”This is why i’m counting on you to calm her down”
On those words, he vanished. Rainbow Dash wasted no time and took off. She drew Sunny’s attention and forced her to follow her outside the city. Sunset and the others followed their friend as fast as they could. When Rainbow Dash brought Sunny at a good distance from Canterlot, she landed on the ground and waited for her friends to arrive. Sunset and the others arrived just in time and they a surrounded Sunny from each side. At their surprise, she transformed into a dragon/phoenix humanoid hybrid. Only her face was fully human and was trying hard to contain herself.
“I really don’t want to kill you...” said Sunny. “This is the Dazzlings i’m after...Those fucking bitches dared to play with my precious little Stygian. When i get my hands on them, i’m going to feed them their own hearts.”
“We can’t let you do that” said Sunset.
“Then you’re gonna DIE!!!” shouted Sunny.
She rushed at Sunset Shimmer, claws outs. Rarity created a shield in front of her friend to protect her. That left time for Sunset to get away as Sunny smashed the barrier with a single blow. Pinkie Pie bombarded Sunny with dozen of explosive projectiles, while Twilight was immobilizing her with her magic.
“That tickled...” said Sunny, laughing. “You’re going to have to do better than those puny bombs to put me down!!”
She broke out of Twilight’s grasp and fired a beam of fire in the sky. The beam exploded and flaming meteorites started falling from the sky. While the girls were avoiding or blocking the burning projectiles, Sunny used the distraction to strike. She was aiming for Applejack first, but Rainbow Dash saved her in extremis. Applejack thanked her friend and told Sunny to come at her. An intense hand to hand combat took place between the two powerhouses and they seemed equally matched in strenght.
“I K.O’d Tirek earlier today” said Applejack to Sunny. “If i can handle his power, i can handle your no problem”
“Well, guess that make two of us” said Sunny. “But you made a mistake letting me touch you...”
Sunny got away from Applejack and activated the explosive scales she stuck on her opponent.
“Tic Tac Boom!” said Sunny.
The scales exploded all over Applejack’s body. It didn’t kill her, but she was so badly injured she lost consciousness and fell brutally on the ground.
“Oh, she’s still alive?” said Sunny. “She’s tougher than i gave her credit for. But she won’t get back up anytime soon...”
“If she touches us, we’re toasted” said Twilight. “We’re not as tough as Applejack...”
“We’re gonna need backup!” said Sunset.
“They’re already on their way” said Twilight. “We just have to hold on until they arrive...”
Sunset took her demon form and stared at Sunny. This one breathed out a torrent of flame that Sunset deflected with her magic. She then fired a magic beam at Sunny, who took the full power of the attack to her right arm, who got shattered to pieces.
“Want me to break your other arm?” asked Sunset. “Or you got enough?”
Sunny laughed maniacally and rushed toward her opponent. Sunset fired another beam that Sunny blocked with her remaining arm, losing it as well. She reached Sunset and headbutted her violently, then kicked her in the chest. Before Sunny could strike a third time, she was immobilized by Twilight’s magic, while Rarity threw in her direction a sharp diamond disk. Once Sunset was safe, Twilight released Sunny from her magic grasp, letting her enough time to dodge the attack. But Sunny didn’t bother moving away and even ran toward the deadly projectile. Under the horrified look of the girls, Sunny was cut straight in half.
“Did she just...deliberately commited suicide?” asked Sunset, shocked by Sunny’s action.
“Well, i guess we won!” said Rainbow Dash. “I’m sorry for her brother, though.”
The two parts of Sunny turned to ashes and as the girls were about to leave, the ashes gathered into a pile. The ashes started glowing and a few seconds later, Sunny reappeared, completely fine, at the total surprise of the girls.
“What?!” said Twilight. “Impossible!!”
“She’s part Phoenix” said Sunset. “Phoenixes have the particularity to magically ressurect after they die...”
“Exactly” said Sunny. “As you just witnessed, i revive each time i get killed.”
“This is why you were acting so recklessly” said Sunset. “You don’t care about dying because you’ll just come back to live after...”
“And i’ll just keep dying and reviving, until all of you fall” said Sunny.
Without warning, she started attacking the girls again. Sunset fired a powerful magic beam at Sunny, who dodged it. She ignored Sunset and headed for Rarity. This one casted multiple crystal barriers in front of Sunny, hoping to slow her down.
“Useless!! Useless!! Useless!!” shouted Sunny, smashing the barriers like they were made of glass.
As Sunny destroyed the last barrier, Rainbow Dash hit her full speed with a metal baseball bat. The blow killed Sunny right away, turning her to ashes. Sunset tried getting rid of them, but the ashes proved to be indestructible. Sunny came back from the ashes and, fast as lightning, smashed one of Rainbow Dash’s legs and broke it. She fell on the ground in pain and Twilight pulled her away. Sunny grabbed the bat and turned it into a puddle of molten metal. She was struck by a huge projectile fired from Pinkie’s cannon. The projectile turned into a thick sticky goo that immobilized Sunny.
“Let’s see you get out of that!” said Pinkie Pie.
Sunny increased her body temperature drastically and blew all of her scales up, getting rid of the goo that immobilized her. That move killed Sunny, but she revived a few seconds later, good as new. She blew up Pinkie’s cannon with a fireball and then Pinkie herself with another fireball, setting fire to her clothes. Rarity got desperate and threw everything she got a Sunny, trapping her in a cube of crystal.
“You’re trapped inside an hermetically sealed prison, Darling” said Rarity. “No oxygen mean no fire, and no fire mean you can’t blow yourself up or melt the crystal!! You’ll die of suffocation and turn to ashes!!”
“But you know the best part? Said Sunset. “I noticed that before you revive from your ashes, they glow brightly from intense heat. Without oxygen, your ashes can’t heat up and that mean you won’t be able to revive.”
“You’re right about me needing oxygen to revive from my ashes” said Sunny. “Indeed, if i die now, and that my ashes don’t burn after one minute, i’m dead for good. It seem i have no choice but to accept my fate...”
Sunny smiled, then laughed.
“...Is what i would say, if your plan didn’t had one fatal flaw!!” she said.
“And what is it?” asked Rarity, too sure of herself.
“You made that prison out of crystal” answered Sunny. “I’m part dragon, and you know what dragons love to eat more than anything? Precious gemstones and magic crystal”
Sunny took a bite from the cube, then another, until she made an opening for oxygen to pass in. From this opening, she shot Rarity with a beam that pierced her shoulder. The intense pain made her faint and the prison disappeared. Fluttershy decided to jump in and used her magic to control Sunny.
“Are you trying to control me?” asked Sunny, with a grin. “Well, have you noticed that i left my head human? I know your magic only affects animal minds, Fluttershy. Why do you think i didn’t fought you as a fully transformed dragon? Because i knew you would have been able to control me.”
Sunny appeared behind Fluttershy and knocked her unconscious. Pinkie Pie, meanwhile, had finally been able to extinguish the flames on her clothes.
“There is only 2 of you left now” said Sunny.
“3” Said Twilight. “Pinkie Pie’s back!!”
This one showed up between the girls.
“Good news, girls!!” said Pinkie Pie. “I’m fine!! Bad news, the fire melted all my ammunitions!! So i’m pretty much useless now!!”
“As i said there’s only 2 of you left” said Sunny.
She turned into a dragon and laughed like a maniac. Sunset fired a full power magic laser at Sunny, that she took in the face without problem. Sunny riposted by knocking her away with a swing of her tail. The violence of the blow reverted Sunset to her normal form.
“You leave us no choice” said Twilight.
Sunset nodded and grabbed Twilight’s hand. Using their power, they borrowed the magic contained in the girls’ geodes and transformed. Twilight turned into her Midnight form and Sunset, into her Daydream form. The sheer magic power the two were emanating was paralyzing Sunny from fear. She reverted to an humanoid form, making Sunset and Twilight let their guard down.
”Fuck it” said Sunny to herself ”Cosmos...now!”
A shiny red gem appeared in Sunny’s hand, that she swallowed. Immediately, Sunny’s power spiked drastically.
“The thing i just swallowed was a Philosopher’s stone” said Sunny, grinning. “It have the property to drastically increase a person’s magic power by 1000% at the cost of the user’s life energy!! But i’m not worried...Last thing, when i’ll die, the stone will be destroyed at the same time, meaning i won’t have a second chance to take you down!!!”
Sunny transformed into her Chimera form, taking on the physical traits of a dragon and a phoenix, while keeping a humanoid shape. Her face had a bird beak and her hairs were feathers, while the rest of it was human. Her whole body was covered of dragon scales, except her wings and feet, who were bird-like and her hands, who were human-like. She fired a powerful fire beam a Sunset, who countered it with her own magic beam. Twilight fired one toward Sunny, who grabbed it between her hands and redirected it in the sky. A hand to hand combat between her and Midnight followed. The impact of their blows was so powerful it started tearing reality appart. With her magic, Sunset was able to repair the damages and they kept going at it for a good moment, until Sunny started feeling an intense pain in her chest.
“I don’t have much time left” thought Sunny. “Screw it, i’m putting everything in my next attack!!”
Sunny created an immense projectile infused with all the magic she had left. The projectile was looking like a miniature Sun, with how much heat and light it emmited. Twilight and Sunset held hands and combined both of their power into a powerful beam that stopped Sunny’s ball of doom. Using all of their power, the two were able to push it far into space were the ball exploded. They reverted back to their normal forms after this last attack, as well as Sunny. Before this one hit the ground, she was caught by the individual they saw earlier. With his magic, he removed the philosopher stone from her chest. Sunny was about to faint at any time, but safe.
“What you did was very reckless, even for you!” said Moonlight to her.
“I had no choice” said Sunny. “You know how i am...”
“We’ll talk about this later” said Moonlight. “Discord!!”
Discord appeared.
“Take Sunny and the stone back home” said Moonlight to him. “But before, can you heal them?”
Discord obeyed and healed the party, as well as restoring Sunset’s and Twilight’s energy, then disappeared with Sunny in his arms. Moonlight looked at the girls, then removed his mask and his robe, revealing himself to the group. Sunset noticed he was wearing something around his neck. From Celestia’s notes, she recognized the Alicorn Amulet and had a bad feeling.
“I first want to thank you for calming down my sister” said Moonlight. “That’s why i had Discord heal you. However, you caused Sunny a lot of harm, even forcing her to use a suicidal move.”
“She mentionned the stone killing it’s user after a while” asked Sunset. “But can’t she come back to life after dying? What’s the big deal?”
“Because if Sunny died while having the stone inside her body...” answered Moonlight. “...She would have stayed dead... Permanently. She knew it, and still used the damn thing...But how did she get her hands on it?”
“I think i know...” answered Sunset. “I was reading Sunny’s mind before the stone appeared in her hand and i she mentioned the name Cosmos”
“I knew it...” said Moonlight. “That bitch...I swear she’s going to pay for that.”
He stared at the girls furiously.
“But before i make that monster pay” said Moonlight “You will pay first for the harm you did to her!!”
The girls took a battle stance.
“One last thing before we start” said Moonlight “Don’t expect help from your friends...Cosmos is keeping them busy at the moment we speak...”
“I was wondering why they were taking so long” said Twilight. “Now, i know why...”
“Time to die!!” shouted Moonlight.