MFC Hogwarts

Disclaimer: I don't own Harry Potter, either the character or the multimillion dollar franchise.

The first sign Hogwarts had of the massive change to the future that had just occurred was Luna Lovegood stiffening, and knocking a turine of gravy all across the Ravenclaw table. Given the fact that Luna did something similar every other Tuesday, no-one really paid much attention to this, except for the Sixth Year whose homework got drenched by the sauce. However, the entire hall did take notice when Luna stood up, pointing her wand towards the ceiling for several moments while muttering to herself. A thin white light shot out of her wand and vanished up into the clouds, and was immediately followed by the sound of a loud gong, startling several students, and a couple of the teachers. Luna then pressed her wand to her forehead and began to spin around in place. Several students started chuckling, and a few of the Ravenclaws glanced down the table to see if there were any of their fellows pranking Luna to act even more bizarre than usual.

Luna then flung out both arms wide while still spinning. Seven white lights spilled out of her wand, spinning around her briefly, before each of them shot out and across the hall. One shot down the Ravenclaw Table, three of them shot out to strike three of the Hufflepuffs, One headed to the Gryffindor Table, and one to Slytherin. Each of them struck a female student directly in the forehead, while the seventh light spiraled up to strike Dumbledore on the nose. The entire hall sat, in shock at the sudden magical display, and Luna stopped spinning, swayed slightly, then took off running for the door. Immediately, each of the six girls she had struck leapt to their feet. Su Li from Ravenclaw; Eloise Midgen, Natalie Bryer, and Arithena Lockspin from Hufflepuff; Epherema Rookwood from Slytherin; and Hermione Granger from Gryffindor. Each of them scrambled after Luna, exiting the hall moments behind her. A few other students started to stand, going to move after their friends or just watch the show, only for the hall doors to slam shut.

"I'm sorry to say that I must ask all students and staff to remain in the Great Hall for the moment. I have something I must attend to, so I will be leaving Minerva in charge. Listen to her, and obey." Dumbledore was standing, his wand pointed towards the great oak doors. He then turned to whisper something to McGonagall, something that caused her to gasp, clutching at her chest, before Dumbledore raised his hand. With a melodious cry, Fawkes the Phoenix appeared in a burst of flame, soaring down from the top of the hall towards Dumbledore. As Fawkes flew past him, Dumbledore opened his hand and grabbed Fawkes' tail, and then both wizard and phoenix vanished in another ball of flame.

Half an hour after Dumbledore's dramatic exit, many of the students were stirring restlessly. Most of the teachers had left the hall, leaving the student population under the oversight of the prefects, with only a terse "Remain here" from McGonagall. The one exception was Dolores Umbridge, who was sitting imperiously at the head table, looking both confused and enraged. However, whatever McGongall had snapped at her was enough to keep her silent and seething. Meanwhile, Harry Potter and Ron Weasley were watching the doors to the Great Hall like hawks. Harry and Ron had been standing up to follow Hermione when the doors had slammed shut, and then McGonagall had posted two of the prefects to guard the door and make sure that noone snuck out.

"I don't like it. What do you think Loony did to her?" Ron was stabbing half-heartedly at the pile of mashed potatoes on his plate, and it was a testament to how worried he was that he hadn't actually eaten anything since Hermione had run off through the doors.

"I don't know, and her name is Luna." Harry frowned, wishing he had the Marauder's Map with him. He had left it in his trunk, after Umbridge had randomly searched through his things for 'illegal contraband' a week ago. She had dismissed the Map then, but Harry didn't want to risk it if she decided to do it again. "She didn't seem angry, but..."

Ron snorted, glaring across the hall. He was a prefect, and had tried to use that fact to slip out with Harry, but McGonagall had caught them and told them to remain within the Great Hall, before assigning the Seventh Year Hufflepuff prefects to watch the door.

Suddenly, a thought popped into Harry's head as he was examining the table. Leaning low, and glancing at the other students (most of them had bunched up in groups to whisper about what was going on, leaving the seats near Ron and Harry vacant), Harry softly called out, "Dobby?"

For several seconds, nothing happened, then there was a muffled pop, and a pair of beady eyes appeared under the table. "Yes, Harry Potter sir? You is calling Dobby?"

Harry winced, as Dobby's voice was pitched just shy of a shout, but no one seemed to take any notice.

"Er, yeah, Dobby. Hey, listen, do you think, you could get something from my trunk? There's a map there, but it is blank, and we want to figure out what happened to Hermione."

"Oh, yes, Dobby can do that. Dobby can be taking Harry and his Weezy to his Grangy, even."

Harry blinked, then glanced across the table to Ron, who looked excited. Ron quickly nodded at Harry, who then glanced back down at Dobby. "Um, alright. Yeah, that sounds good. Um, so, can you take us now?"

"Yes, yes. Just be holding Dobby's hands, and I will take Harry Potter to his Grangy."

Reaching under the table, Harry felt around, finally gripping onto Dobby's childlike hand. Then, with a pop, he, Ron, and Dobby vanished from the Great Hall.

Harry collapsed to the floor when he appeared, having been sitting in a chair and suddenly finding himself sitting on thin air. Beside him, he heard Ron do the same, followed by a yelp from Dobby. Glancing over, Harry realized that Ron had missed Dobby's hand and was actually holding onto his ear, which had led to Dobby getting dragged down with Ron. Quickly scrambling to his feet, Harry glanced around. He was standing in a long corridor, which he belatedly realized led to the Room of Requirement. He could see the portrait of the trolls just down the hall, and across from it sat a large iron-wrought gateway where the Room should be, through which a flickering blue light was pouring out.

"Are they in there?" Harry glanced over at Ron and Dobby, who had both regained their feet. Ron was brushing himself off, his gaze also tracking down to the Room of Requirement. "I would have thought Hermione would have been in the Library."

"Yes. They is in the Come and Go room, and..." Dobby trailed off, his ears drooping. "Dobby can't be going in. Dobby is sorry, and so is Hogwarts." Before he could explain his odd statement, Dobby vanished with a sharp crack. Ron and Harry shared a glance, before turning and heading down to the doorway.

Both Ron and Harry stopped dead as they arrived at the door and actually saw the current interior of the Room of Requirement. The walls were a combination of solid stone and large gemstones, with the gemstones bulging out of the wall in odd places. Light poured from the gems, and flowed along glowing writing that covered the walls, which Harry vaguely recognized as Runes from some of the papers he had seen Hermione writing. Speaking of which, Hermione was standing in the center of the room, along with the other six girls, forming a loose circle around a massive cubic stone that was hovering in the middle of the room. It was hovering at a diagonal, rotating slowly, with one corner pointing towards the floor and the opposite corner pointing at the ceiling. Magical script glowed all across the face of the stone cube, and light flowed from the gems in the walls into the cube and vice versa. The seven girls seemed to be drawing something on the floor, a large circle with odd etchings. As Harry and Ron entered, all seven girls looked up as one, and Harry was startled to see that all of their eyes were glowing, faintly.

Breaking off from the group, Hermione and Luna both hurried over to where Harry and Ron stood gaping at them. Before either of the boys could open their mouths, Hermione leapt forward and hugged Harry tightly, causing him to stumble from her momentum. Harry barely had time to blink before Hermione had let go and grabbed onto Ron, hugging him tightly as well. She then stepped back, and Luna stepped forward, holding an oddly shaped crystal, which seemed to be vaguely shaped like a wand.

"I am glad you are here." Both Harry and Ron jumped slightly, as Hermione and Luna were both talking in unison, with almost identical inflections. "There is little time to explain. Harry, you have to take this to the top of the Astronomy Tower, hold it up, and cast a spell. Any spell, though your Patronus would likely be best."

Luna held out the wand, and Harry reached out almost on instinct, before Ron yanked him back. "What are you doing? Whatever freaky thing has got them might get you to."

Luna tilted her head, and then spoke alone. "That isn't very nice, Ronald."

"Yeah, well, you did, whatever you did to Hermione, and you aren't taking Harry." Ron added action to words by drawing his wand, but Luna didn't react. Hermione, on the other hand, stomped her foot.

"There isn't time, Ron. We are trying to help defend Hogwarts, and Dumbledore is gone, and we need Harry's help, and I'm going to...to..." Hermione broke off, her voice trembling, and Luna reached out to touch her shoulder. Hermione shook her head and straightened up, before looking right at Harry. "I don't have time to explain now, but please, Harry, trust me. I promise I will explain after... after this is all over."

Harry stared into Hermione's eyes for a second, before stepping around Ron, who had partially put himself between Luna and Harry, and grabbed the crystal wand. He stood there for several seconds, but nothing happened, until Luna giggled.

"It won't do you much good here, though that is a good pose."

Harry flushed, and, after taking a deep breath, nodded. "Right, Patronus, Astronomy Tower. Got it."

Ron scowled a bit, before nodding. "We'll be here."

Hermione shook her head. "No, Ron, you need to go with Harry. There are going to be teachers and prefects, and they will try to stop Harry. You need to get him up to the top of the tower."

"And leave you with Loony and whatever that is?" Ron flailed his arm, swinging his wand around to encompass the large floating stone block.

"I'll be fine." Hermione said, wearily, and Harry felt more than heard the undertone of disbelief that showed Hermione didn't quite believe her own words. Regardless, after several seconds of scowling, Ron huffed in disgust.

"Alright, but we're coming right back here." So saying, Ron turned and marched towards the door. Harry followed, as did Hermione.

Once they reached the threshold, Harry turned to look back at Hermione, who was fidgeting slightly. Finally, she seemed to screw up her courage to say something. "Tell... tell my parents that I really loved them."

Harry's eyes widened at the note of finality in her voice, but before he could say anything, a pair of silvery doors slammed shut across the entrance to the Room. Howling, Ron spun back around, his wand out, and two blasts of magic shot out to impact the door with no effect.

"Alohamora! Reducto! Open, damn you!" Harry reached to grab Ron's arm as he kept blasting away. "Geroff, Harry. You heard her. That's... that's not the kind of thing you say when things are OK. You don't... she doesn't think..."

"I know. Oof, I know!" Harry finally managed to wrestle Ron away from the door. "I don't want to leave her there either, but she thought this crystal thing is important to whatever she is doing. I trust her, so we need to hurry and do that, and then we can break in and get her back."

Ron glared at Harry, his eyes not really focusing on Harry's face, before he pulled away. "Fine. Let's go."

They arrived at the top of the Astronomy Tower, having only encountered a single, Seventh Year Slytherin prefect that Ron had taken a bit too much pleasure in Stunning. They burst out onto the observation platform, to find that a tremendous storm was brewing overhead, rumbling ominously. They glanced briefly at each other, before Harry stepped forward to the middle of the towertop. He pulled the crystal wand from where he had stuck it in his pocket, turning it over in his hands. Given that Luna and Hermione had said to cast the Patronus, he assumed he could use the crystal wand as an actual wand. Steeling himself, and feeling somewhat foolish, Harry raised the crystal over his head and quickly swished it, incanting, "Expecto Patronum!"

Several things happened all at once. A loud gong seemed to ring in the tower beneath them, ringing and echoing for far louder and longer than it should have. As it rang, a bright glow seemed to seep out of the the cracks in the towertop around Harry, floating up to gather around him, while overhead, streaks of light seemed to dance along the inside of an invisible dome over Hogwarts. In Harry's hand, the crystal began to glow, fiercely, and it felt almost magnetically drawn to the sky, forcing Harry's arm straight up. Harry tried to slacken his grip on the crystal, but his hand felt like it was glued to the crystal, not letting up in the slightest. Just as the light around Harry reached blinding levels, he felt a warm rush flow upwards from his feet before bursting up and out of the crystal wand. With it went the light surrounding him and the glow from within the wand, a single glowing bolt of energy shooting up towards the heavens.

When it reached the level of the semi-invisible dome, the light flared before spreading out, revealing the dome as a transparent bubble of bluish-white light. Streaks of other colors seemed to feed into and flare around in the dome, while Harry stood, transfixed at the sight. Whatever had just happened, it wasn't a Patronus.

After a couple of seconds, Harry realized that he was still stuck in the same position he had been before. Before he could say anything to Ron, Harry felt the hair on the back of his neck stand up and, with a startling flash, a bolt of emerald green magic leapt out of the crystal in his hand and up to strike at the glowing dome. Harry flinched, slightly, before realizing that nothing much seemed to have happened. A moment later, another stirring happened, and another bolt of magic, a deep purple this time, leapt out to strike the dome. Again and again the bolts leapt up, striking at the interior of the dome, each time a different color or shade. Harry could feel a great and powerful something rushing through him. Time seemed to lose all meaning as the bolts continued, one after another after another after another...

"...ry...arr...HARRY!"

Harry jolted, shooting up from where he was laying on the floor. At some point, he had apparently collapsed to the rooftop, and Ron was bending over him, shouting. On seeing Harry open his eyes and sit up, Ron quickly grabbed his shoulders and pulled him upright.

"C'mon Harry. We have to go get Hermione. I tried while you were being Merlin, but I couldn't break down the door! C'mon!" Ron tugged Harry towards the stairwell, Harry swaying in his grip, his eyes tracking out at the grounds, and he saw that the dome from before was now a crisscrossing mesh of lightning arcing across the sky, growing brighter and brighter. Harry felt every hair on his body suddenly shoot up, and he staggered into Ron as the sky lit up white...

Harry sighed as he pulled himself out of his memories of the beginning of it all and lifted his head off of his desk. Several piles of paperwork were scattered around his desk, and Harry let out a long breath as he pulled on of the stacks towards him. He read through the request form for additional classroom space for Alchemical Testing, before scratching his signature across the bottom and dropping the form into a small tray on the right corner of his desk. The form vanished the instant it entered the tray, whisked off to the Records department for filing.

A pair of dainty hands gripped his shoulders, kneeding them and sending the feeling of static dancing across his skin. A breathy voice whispered in his ear. "You know, half of those papers are bogus papers Dobby slipped in to make you look more important."

Harry groaned slightly, but a small smile played across his features. "I know, Helensa, but it's fine. It gives me an excuse to get out of Sal's experiments."

The girl giggled. "As you say Master."

Harry's head made a loud thunk as it hit his desk. "Not this again. I knew agreeing to bring Bellatrix along was a mistake."

A second laugh. "Say that after you've eaten one of her steaks. You know she only says it with the greatest respect."

Harry chuckled, lifting his head and turning his chair to look at Helensa. She looked like a ghost, but a bit more opaque and filled with pale colors. Her features were constantly shifting in small ways, her eyes seeming to widen, the color shifting towards hazel, before they would slowly narrow and shift towards a pale blue. Her hair was wavy, but it was slowly straightening itself out, while her lips were wavering between thin and full.

Harry shook his head. "You're right, I'm just not used to seeing a version of her like...that."

Helensa smiled. "You mean like a mix of Molly and Wanda."

Harry nodded. "Exactly. It's...weird." He shook his head. "Regardless, I actually had an idea about the issue with that star empire. I was hoping to run it by Hermione and Su."

Helensa nodded, before her form seemed to blur further. After a moment, she had taken the appearance of a 15-year old Hermione Granger. A moment later, the air next to her shifted into the form of a 15-year old Su Li. Hermione gave a somewhat mischievous grin. "You do realize you could just ask Helensa directly."

Harry shrugged. "Yes, but then I would have to deal with Luna and Epherema's comments, and I'd rather get through this with a minimum of innuendo."

Both girls nodded, giggling, and Harry matched their smiles. "Right, so we were having issues with moving while defending against their starfighters' attacks. I was thinking..."

Whatever Harry was thinking was cut off as he vanished in a brief flash of light, leaving the two semi-transparent teens to stare at where he had been. After a moment, Hermione huffed while Su giggled, and they both vanished. A second later, Helensa's melodious voice echoed through out Hogwarts. "Attention all. Harry has been summoned away...again. We will now be pursuing. Prepare to face rampant stupidity." Groans and laughs met the announcement, before the MFC Hogwarts vanished in a flash of light from where it had been orbiting around the Moon.

Ok, so this is an introductory chapter to a sort-of Deus Ex Machina that I had thought up. Basically, the MFC (Magical Flying Castle) Hogwarts is a version of Hgowarts that is traveling through time, space, and dimensions. The background behind it is that, in their home dimension, there was a Prophecy known as the Averted Prophecy. It was essentially a doomsday prophecy, which was broken by the sinking of Atlantis. However, due to the stupidity of Oliver Cariseo, an OC character of no importance, the Prophecy is once again true, meaning that the entirety of Earth will collapse into a dimensional black hole. Luna was made aware of this due to a latent Seer Gift, and she ended up informing the six girls mentioned and Dumbledore. The plan: Turn Hogwarts into an interdimensional portkey, gather as many people as possible, and get the heck out of dodge before the oblivion wave hits.

The six girls were gathered because they each had a gift that was needed to actually make it possible to turn Hogwarts into a portkey. Su Li was a Runic prodigy, Eloise Midgen can actually see Magical Flows, Natalie Bryer was Temporally unstable and could see time non-linearly, Arithena Lockspin had an affinity for Travel Magic, Epherema Rookwood can view alternate dimensions, and Hermione Granger possesses a latent affinity for Arithmancy and Enchanting. In the Room of Requirement, they accessed the Corner Ward Stone of Hogwarts (that giant cube), and used it to literally merge with the Spirit of Hogwarts, forming the gestalt entity HELENSA (Hermione, Eloise, Luna, Epherema, Natalie, Su, Arithena). While their bodies were destroyed, their minds live on, and they are honored for their sacrifice.

While they were doing that, Dumbledore headed out with Fawkes to gather Magical Britain to Hogwarts. He started out in St. Mungo, having them Floo over to the Hospital Wing, then went to the Ministry and got the Unspeakables to work on transporting the Ministry (largely by force) all to Hogwarts, and then to Diagon Alley. From Diagon Alley, he created portkeys and had every post-owl he could transport them to families across England, with a compulsion on the Portkey to use it. He also sent Patronuses out to the other European Countries, and sent portkeys to the families of the Muggle-Born. After he finished that, he started sending portkeys out to random Muggles. He was still doing that when the Oblivion Wave consumed him.

What Luna had Harry do with the crystal wand was essentially claiming the wards of the castle, and altering them to allow the Helensa Group to use them to turn the castle (and a large section of the grounds) into an interdimensional portkey. This made him into the Headmaster, a position that he continues to hold to this day.
The version of Harry shown is around 35 years down the line. They have visited multiple realities, and Hogwarts is now essentially a cross between the USS Enterprise and an actual school.

Now, the inhabitants of Hogwarts may vary, as people die, settle down else where, join on, or are born. However, there are a few that would be constants whenever MFC Hogwarts shows up:

Harry Potter (Original): The Harry from Hogwarts' original dimension. He acts as the Headmaster and general leader, despite the fact that he doesn't really see himself as much of a leader. Everyone else rolls their eyes when he protests like that. Harry is NOT the Master of Death, but he has been enhanced in a few ways. He has had Magical Martial Arts training, is outfitted with a pocket dimension in his forearm (put there due to a lab accident), and wields the Black Staff (a staff he found on a ruined planet that is undestroyable [if broken, it will fix itself instantly], capable of changing size [he typically keeps it as a small sliver in his lapel], capable of movement controlled by Harry's thoughts [he often enlarges it and uses it as an emergency broom], and capable of channeling the power of the raw elements [lightning be a favorite of Harry's]).

Ron Weasley (Original): Ron is probably the most powerful being on the MFC Hogwarts, outstripping even Helensa. He has stumbled through close to a dozen magical accidents, leaving him with traits of dragons, phoenixes, hydras, hellhounds, vampires, among others. He is also a Runecaster, capable of creating complex runic diagrams out of thin air, and is bonded to the Runestone, a powerful magical artifact known as a Cornerstone of Creation. The Runestone has every runic script ever invented or learned by humanity etched onto its surface, knowledge of how to use them contained within itself, and access to the nigh-limitless energy of the quantum strata between dimensions.

Salazar Slytherin (Demon Slayer): Salazar discovered a method of immortality which, to this day, he says he regrets ever attempting. This is because, for one, it granted him perfect recall, and two, it started out with a ritual knife, dragon dung, and undiluted Bubotuber Pus, and it only got worse from there. Inflicting memories of it on a demon lord caused the demon lord to commit suicide to escape. Salazar spent around 900 years in his native reality after becoming immortal before researching a way of jumping worlds. This dropped him into a hell dimension bordering his world. After being tortured for a year, he finally realized that he was being tortured (he had forgotten to pay attention to the outside world while trying to figure out where his original world-jumping technique went wrong), and he then proceeded to break out before starting a rampage across the hell dimension. After terrorizing the demons for around 400 years, the demons succeeded in banishing him from their realm. He then spent around 1200 years wandering between dimensions before stumbling across the MFC Hogwarts. He ended up setting up shop as a Head Researcher on board.

Theodore Lupin Jr. (Shapeshifter): The son of Teddy Lupin and Victoire Weasley, his heritage combins four separate bloodlines which have a bit of a tweak from the baseline Harry Potter dimension, resulting in his amazing power. He combined the power of the Lupine Curse borne by Remus Lupin, the Metamorphagus Gift from Nymphadora Tonks, the Veela Gift of Fleur Delacour, and the Mage Sight gift and Magical Force bloodline of Bill Weasley. This combined to allow Theodore to simply observe someone or something, and then perfectly shapeshift into them and use whatever abilities they possess. He has also learned how to mix transformations, making him incredibly dangerous combatant.

Wanda (Weather Worker): Wanda is an Australian Witch who was a friend to a Hermione Granger that moved to Australia after First Year. The MFC Hogwarts ended up helping Wanda avenge Hermione's death at the hands of Death Eater-like extremists, and she ended up joining the crew. She has the personality of a slightly more formal Nymphadora Tonks, enjoying making subtle jokes and digs while seeming to be completely serious. She is a very powerful weather worker, capable of creating and controlling massive storms in under a minute or two.

Helensa (Gestalt): As described above, Helensa is a combined entity, combining the minds of the seven girls and the spirit of Hogwarts itself. She is capable of controlling all of the castle, and acts as an analog to the ship computer on the Enterprise. While her manifestation lacks magic of its own, she can channel magic through Hogwarts to create large scale effects.

The timeline for the MFC Hogwarts consists of a bit of a conflict in the beginning, which I may write some chapters about later, where Ministry workers like Fudge and Umbridge tried to take control of Hogwarts from Harry. In the end, most of the population that was saved were dropped off on three different worlds: a world where 90% of the magical population died to a super-Dragon Pox epidemic, a world that was still in the 1100's, meaning magic was still used openly, and a deserted garden world, which had animals, plants, and some magic, but no sentient beings. Many of the muggles and muggleborns, as well as some purebloods went to the first world, a vast majority of the purebloods went to the second, and the rest went to the Garden World. Umbridge left for the 1100 world, and she died in a barbarian raid after she antagonize the muggle warriors. Fudge was dumped off on the garden world after he tried to stay on Hogwarts while trying to take over. He ended up becoming a farmer and found that he actually really loved growing food. At the current time, Fudge is one of the most successful farmers on the Garden World, which has been renamed Hogsmede.

The MFC Hogwarts maintains contact with Hogsmede, visiting every so often, and most of the "crew" of Hogwarts have homes and family on Hogsmede. Ron Weasley is one exeption. While most of the crew has only had 35 years pass at most, Ron ended up getting lost in the multiverse shortly after bonding with Runestone, and ended up on a 50 year journey, where he met his wife, Selyna, and had three kids: Oric, Mai, and Liam. She is an Elfling, a High Elf like being that is close to 900 years old, and currently she lives on Hogsmede, while Oric and Mai both serve on board the Hogwarts. Liam is in Selyna's home dimension, working as a guard captain.

The MFC Hogwarts would be the sort of thing I can use to drop a group of powerful figures into and out of a story if necessary, and which other writers can use as Cameos if so desired.