Twilight quickly rushed to the site of the explosion, and began assessing the damage. As she looked around, she noticed that there seemed to be a pattern in the destruction; each explosion site had been marked with or lined with jet-black crystals, as if the crystals themselves had been the cause of the disruption.
~~~{Cockpit}~~~
A horrendous odor had begun to fill the room. It was as if somepony had brought the entirety of Tartarus itself up into the ship, and made scented candles from it. Luna sat in the corner of the room, trying her best not to belch. Her sister frantically fumbled with the dashboard, opening every ventilation shaft in the ship.
AIR PURIFIERS: 50% ACTIVATED
AIR PURIFIERS: 75% ACTIVATED
Celestia held her breath, awaiting for the relief that the purifiers would bring upon the cockpit, when suddenly, the entire cockpit plunged into darkness. As she lit her horn, she noticed that for some reason, only her immediate surroundings were illuminated. The rest of the cockpit- Luna, the dashboard-- they were still hidden in the shadows. She began slowly observing the room. The darkness was obviously part of some sort of spell, and whoever did it definitely didn't do it out of good intent.
A deep, frightening voice filled the room, confirming her fears. "Oh, petty little Princess," it began, "how nice of us to meet again..."
Celestia heard her sister yell out, "TIA, WATCH OUT!". Following her sister's instructions, she quickly looked behind her back, and narrowly dodged a large, jet-black spear of crystal that had been flung at her neck.
"Sombra," she growled, "so you return once more..."
Sombra laughed mightily, his terrifying presence echoing about the corridor. "Indeed, and this time, I'll make sure that I stay."
Sombra quickly morphed back into his pony form, the dense smog in the air immediately subsiding. Once the room was clear again, Celestia immediately saw what Sombra had in store for them. Here he was, when the rest of the royal guards and aid workers had been sent off to battle the massive fire that had been set ablaze in the city. He lashed out at Celestia with full force.
Celestia quickly sidestepped Sombra's attack, causing him to smack face-first into the control panel. Just as quickly as Celestia had sidestepped him, he swiftly lunged at Celestia a second time. Unfortunately, this time, he had caught the Princess off guard, and tackled her onto the floor.
Celestia shouted out as she wrestled with the tyrant. "LUNA!" She yelled, "FIND HELP!"
Somewhere in the corner of the room, Luna nodded, and slipped out of the room.