There is a poll up on my profile which will determine which girl Dudley is paired with. Keep in mind that the membership of Harry's Harem will not change regardless of how that poll turns out. Once fourth year begins that poll closes, if it ends in a tie I as writer reserve the right to break said tie.

Furthermore I'm going to post Servant stats in the AN's along with any original or altered Noble Phantasms. The stats may or may not be their canonical ones, but I already noted that Harry's Origin was messing things up. You'll notice that with one exception the Servant's will have low luck stats, and there is another pattern that you may pick up on which I'm not telling.

Lancer:

True Name- Cuchulain.

Strength- A Rank.

Endurance- C Rank.

Agility- A+ Rank.

Luck- D Rank.

Mana- B Rank

Noble Phantasms - B Rank:

Gae Bolg- a crimson spear that can reverse cause and effect to nearly guarantee a strike to the heart. Divine levels of good luck, or other counter death protocols required for survival.

Apprentice's Grimoire- a book which can record spells cast in the view of the owner, requires permission from the person who cast the spell, the full incantation and the purpose of the spell in question. (Original Content, based on his training with Scathach in the legend)

Overall ability score- 23.5

Additional notes- since he is a Celtic spell weaver, his summoned state has the powers of a Druid, this allows him to create new solutions when dealing with forest and meadow type creatures or beings.

That's about how I'll lay it out E-A matching up to 1-5 with a plus sign giving half a point, is this how that ranks really behave? No. Do I particularly care? Again no I'm just trying to give ball park estimates on overall power here. Other interesting quirks will be given a nod as well.

Lancer won't be the only to gain strange abilities though the (Profession A + Homeland B=Profession C) thing, there are other combos of that which I will be having some fun with.

It was a peaceful train ride at first, unusual sweets notwithstanding. Dudley abstained from them "I think it would be smart to lay off desert for a while, considering what happened to that man." he said and then simply continued doing his light-element mage-craft. He didn't really need to worry about running out of magical power after all he had thirty blue blood circuits and a magical core to draw from.

Light element magecraft was more than a little bit esoteric, so he had to be daring about how he tried to apply it. Light was a form of radiation which meant that at higher levels it would be extremely dangerous, but at levels available to his pools of energy it was probably little more than a distraction. His own style of magecraft would more than likely be focused towards fighting monsters that like darkness.

WInd elemental mage craft was a bit more useful, but his willpower wouldn't hold up past two or three wind blades, something to work on over time. Lancer was quite insistent that he was doing well for a boy his age, particularly one with not even a month of training, but so far as Dudley was concerned he had eleven years of slacking off to make up for.

His practice was interrupted by a trio of boys who entered the compartment. The blonde one was strutting as though he owned the train they were on. Lancer decided to leave this problem to his charges and astralized. "I heard that the great Harry Potter was in this compartment. I am Draco Malfoy" gesturing to the boy on his left "This is Vincent Crabbe," now to the right " and Gregory Goyle."

Now smiling that same ridiculously uncharming smile Dudley had worn far too many times. Draco Malfoy spoke "I think you'll find that some wizarding families are better than others. I'd be perfectly happy help you learn which is which. Don't want our hero falling in with the wrong sort after all."

Harry looked over Draco Malfoy and as befitting the grand tradition of Marauders Harry began some antics "Hey Dudley, this is guy is reminding me of someone but I can not for the life of me figure out who." He said prompting the Muggleborn Wizard to speak up.

"Well Harry, add a stone or two of weight to your image of him and you'd be looking at a version of me brought up in the wizarding world, without what happened at the end of July to help him." Dudley spoke with a grimace.

"As if I'm anything like you mudblood filth!" Draco then spat at Dudley.

"Well it looks as though you and I just will not be able to get along." Harry said calmly. "Dudley if you would be so kind as to demonstrate the difference between him and you."

Dudley nodded and actualized his wind type mage craft "Howl and Scour!" Blasting the trio of bullies right out of the compartment. "And stay out!" he said. Lancer rematerialized at that point and sat back down.

"You do realize that you probably just started a war right?" The Heroic Spirit asked "Brats like that tend to hold grudges and until he gets the incorrectness of his views thrown in his face he'll probably resent you. Even then it's entirely possible he'll lose it and turn into a real nightmare down the line. Admittedly it's unlikely he'll be much of a threat but our knowledge of Wizard craft is limited."

Lancer's implication was clear- That for all they knew Wizards might have a way to defeat spiritual beings. If that was the case then even Heroic Spirits needed to tread carefully when fighting them. Dudley then helped the Wheelchair bound wizard into his robes like a dutiful lackey (even if Harry now considered him a friend).

When the train stopped Lancer said "This is where we part ways for the moment. Be careful and I'll see you up at the castle."

A very large man was yelling for the first years to follow him. Harry and Dudley, along with the hundred or so other first year students proceeded to the shore of a lake. "Careful Cousin, we both know that neither of us can swim." Dudley commented, as Hope hopped in the boat with them.

"One more problem to solve, on a list that grows with each passing day." Harry said, unintentionally flaring his magic. "We'll solve it eventually, Lancer might just make it a part of the Physical Education curriculum, but for now we need to focus on learning wizard craft and mage craft. Fixing my legs may be a big deal to you but it isn't to me."

A blonde girl joined them and asked "Mind another passenger?" The two boys motioned for her to join them and she hopped in just before the whole fleet set sail. "I'm Daphne Greengrass. Heiress of House Greengrass. Everyone should know who you are, Lord Potter, though what's with the chair?"

Speaking up before Dudley could self derogate "I'm paralyzed from the waist down. This chair is a muggle contraption that allows such people a measure of mobility. Until someone figures out how to restart the nerves in my legs or I finish the enchanted armor I'm working on, Hope here," the Dog in question gave a friendly bark "Will have to pull me as I'm not all that strong."

Dudley then piped up "Though it's worth noting that Harry here is Lord Black as well. Apparently the person in charge of House Black preferred him as an heir over the Malfoy Ponce." Lancer and Harry's habit of snark had rubbed off on the larger boy.

"I'd forgotten about that bit. Yeah, apparently no one informed him that he got passed over in favor of me for a Wizengamot seat. Might have kept him from trying to befriend me and saved me and Dudley some trouble."

Daphne was shocked by their casual dismissal of the blond boy "The Malfoy family can make trouble for you. They are one of the oldest wizarding families in britain and have the wealth to back it up."

Harry smirked "I spent ten years in a place where I was resented for my very existence. Unable to run, unable to fight. All I could do was watch and learn, and I've always been a very good student. The wizarding world is a different story entirely. Now I'm a very big fish in what appears to be a medium sized pond. If Bad Faith annoy me with their antics I'll provide antics of my own."

At the end of Harry's little speech, the first years got their first sight of Hogwarts, and all of them were impressed by the view, with the exception of the Malfoy prat and his bookends who were, by cosmic coincidence in the next boat over.

The first years reached the docks and were promptly handed off to a stern looking woman who introduced herself as Minerva Mcgonagall who would be teaching Transfiguration.

"In moment you will be sorted into one of the four houses, each values different qualities, but each has in it's time produced outstanding witches and wizards. Garrick Ollivander, england's foremost wandmaker was from Ravenclaw. Damocles Belby, inventor of the Wolfsbane Potion was as slytherin as they come. Newton Scamander, author of 'Fantastic Beasts and Where to Find Them', was a Hufflepuff. Gryffindor produced none other than Albus Dumbledore." She explained painfully unaware of her employer's true colors.

The sorting proceeded apace, and when Dudley was sorted into Gryffindor Mcgonagall got a look of pride, The Evans line had always made them daring after all. No, what threw her off was what happened during Harry's sorting. He rolled up to the other chair and carefully donned the hat

"Well well mister Potter, I'll just take a look see around and-" suddenly Godfrey was forced to speak aloud "Gahh what the bloody hell is wrong with your mind!" After that you could hear a pin drop in the great hall. Highly unusual.

"It's not safe to wander around a castle without guidance from it's residents. Never know what sort of nasty trap you'll step in." Harry replied with as chiding a tone as he could manage telepathically. "I don't take kindly to people who try to learn my secrets. I can't risk any enemies learning some of what's in my mind, nothing personal against you."

"Well that actually simplifies matters a great deal. Honestly though, I'm not authorized to reveal anything to the headmaster without a guardian's permission, and your 'guardian' is a summoned Spirit. As for your house, well clearly you've got the tricks to make the scumbags look like fools."

"What can you tell me about the headmaster then? I'm guessing you see him more than once a year and frankly I'd prefer to believe incompetence rather than malice but I need to know which it is definitively before I take action."

"Well that question really picks out your House perfectly. Regarding Albus he's setting you up to catalyze the wizarding world's destruction. He's got suspicions about other soul anchors that Voldy might be using but he's not acting on them either." The hat then yelled "Better be Slytherin."...

In another Reality Zelretch began to teach Sakura how to use the Kaleido-stick which had been modified not to place the embarrassing outfit on the wielder, instead using the clothes they were already wearing at "Include" and the Heroic Spirit's outfit for "Install"

"Okay, time for your Class Cards. The Harry I'm sending you to has made me laugh really hard a couple of times, so I'll start you off with three." Pulling out the Saber Class Card, "This one summons the power set from the Princess of Knights, Artoria Pendragon."

Sakura took the card and, following the practiced movements spoke "Include!" it transformed into the legendary sword Caliburn. Then she spoke "Install!" Suddenly the black pants and T-shirt she was wearing changed into a white dress with a cuirass.

Moving around in it was surprising easily, and soon Zelretch was training her in the use of a sword "Ordinarily I wouldn't bother training a Kaleid Liner, however a sentient Kaleido-Stick would draw unwanted attention once you get there." He said even between strikes, "As someone who prefers power be handled safely if not responsibly I need to make sure you've mastered the class cards I send you with."

Okay that was a bold faced lie. The Dead Apostle was still just killing time until Black Wing showed up, but the particular set of Class Cards he'd drawn from the throne of heroes for Sakura's use were a little unusual.

The Lancer Card drew power from a Hindu goddess, and not even a militant one. The Archer card was linked to the Greek Huntress Atalante. Rider was that girl who beat Tarrasque into submission back in the day. Caster was even more strange, something rather similar to the Saber card only linked to the legend of the Argo and Medea.

The other two cards were actually the only ones he'd actually chosen on purpose. Assassin was Hassan of Serenity, a seductress whose body produced poisons that would make touching her fatal. The ability to turn her body toxic at will would prevent Sakura from suffering like she already had again. Berserker was Florence Nightingale, whose abilities and mania focused on healing, if Harry hadn't worked out the riddle about fixing his legs by the time Sakura was sent there, her abilities would...

Back at Hogwarts Harry woke up with the distinct impression that some old man was plotting something. "Probably just the headmaster." he muttered before setting off to his first day of classes.

Charms was interesting. The teacher was a very short man named Filius Flitwick whom when Harry politely asked if the man had Goblin ancestry gave a face splitting grin and said "Five points to Slytherin, for guessing that on the first day." then proceeded to explain the basics of theory which were completely alien to Harry's prior training.

Harry Potter realized that his prior instruction in Mage Craft would not be applicable to Wizard craft and thus he would need to study harder on it. After all, Voldemort was probably still alive, given the soul anchor Lancer had destroyed. Even if Voldemort was really gone, the hat had confirmed that Albus Dumbledore was an enemy as well.

Harry needed to be ready for action, and his unusual element and origins would make it exceedingly difficult to fight using magecraft, all he could really do in that department was Gandr, and while that had its uses it was just one spell.

The thing about being a one trick pony is that most of the time, eventually someone is going to find a way around that trick, and then you're doomed. There are very few exceptions to this rule, and Harry was not willing to gamble on himself being one. After the lesson Harry was set to head for potions. Down in the dungeons, same as the Slytherin Common room.

Right as Professor Snape arrived Malfoy tried again with the blood purist crap. Dudley shut the poince up in a downright inspired manner. To wit, he turned Draco's hair a very specific shade of ginger with a simple color change charm(1*) which really made the Potions master chuckle.

"Five points from Slytherin for mouthing off, and five to Gryffindor for creative solutions." Snape barked surprising himself. "Wands away, and be ready to take notes. Potions is one of the more subtle forms of magic but it is a magic nonetheless. The dedicated study of this art can work wonders that no spell can replicate. However since there isn't much wand waving and the average witch or wizard isn't patient at all few people attempt to master it."

"Finally someone starts making sense around here." Harry said.

Professor Snape looked like someone had slapped him pretty hard "Any explanation why you're sitting in that muggle contraption Potter." he sneered trying to recover his stride.

"Sir, Professor Mcgonagall assured me that she'd explain to the other teachers about the fact that I am paralysed from the waist down. Dudley's trying to find a way to fix it and I'm trying to build a work around. In the meantime you are going to have to put up with a few irregularities."

"Well mister Celebrity, what would I get from adding powdered asphodel root to an infusion of wormwood?" The greasy haired professor asked with venom and steel in his voice.

"There are three potions that use those ingredients albeit in varying amounts, a wide range antidote named Counter Force, Fleamont Potter's Sleekeazy Hair product, and Draught of Living Death, which if I am not mistaken is a potent sedative." He'd read all about poisons and antidotes, and his family still owned the Sleekeazy patent.

"How would someone go about harvesting bezoars?" Snape asked.

"Cutting open the stomachs of goats." Bezoar related once more to his Magus-like training.

"What is the difference between Monkshood and Wolfsbane?" The teacher continued to question.

"They are the same plant. I certainly had to deal with that infernal stuff more times than I'd have liked as a kid." What was with Petunia Dursley and her garden anyway?

The Potions instructor was shocked; How could the offspring of the bully who'd made his school years a nightmare be so intelligent? Then he took a look at the boys posture and expression. There was nothing in either of James Potter or Lily Evans. It was Arland Evans. Lily's father, a decorated military officer, and the primary reason why Severus had survived to get his Hogwarts letter

A man whom had walked right into the house of a domestic abuser, broken no fewer than six of Tobias Snape's bones and permanently scared the drunkard into behaving. A man who held Severus' enduring respect even so many years later. "I believe that earns the five points mister Malfoy lost Slytherin back rather efficiently mister Potter." Severus said surprising himself.

Harry had the foresight to copy down the instructions, and Dudley was kind enough to help him with the preparation of the potion. Cooperation between those two houses was rare. More difficult to find was the sort of implicit trust the Gryffindor had in and from Potter. The two, in spite of how cautious and analytical they'd been, thought nothing of turning their backs to each other.

It was a beauteous thing the fact that they could believe in each other like that. If only Severus had not betrayed Lily to the Death Eaters perhaps he'd have been able to manage that level of trust in someone.

Perhaps this particular Potter wasn't like his father, heaven knew that Severus tried not to be like Tobias. There was definitely some mischief in those eyes but so long as the boy kept from going too far in dealing with those who offended him and didn't target those who hadn't struck first, Snape was prepared to tolerate a prankster. After all it takes a healthy dose of of cunning to prank successfully, which Severus had begrudgingly respected James for.

Alright a few things here.

Regarding the summoning it's important to note that the system is tied to Harry meaning that the ritual is being altered by Harry's Element, Origin, and even a few differences between Potterverse and Nasuverse.

Regarding Lancer's ability to remove the soul fragment in Harry's scar, that was a one time thing, only made possible by a number of unrepeatable factors: Lily's sacrifice providing a push, Lancer's link with Harry allowing him to isolate the foreign magical signature, and the fact that Lancer hadn't fully anchored making his own presence malleable enough to wrap around and absorb the blasted thing.

Numbered Annotations:

(1*) Cannot remember where I picked up this particular retaliation, just know that it was another fanfic.

I'll drop another hint-

Saber hasn't been summoned as a Saber in canon (so far as I know) but can be summoned as one according to the wiki.

Regarding the Harem

Saber, Rider, and Assassin. Then Sakura and two Potterverse Characters