Nitpick: plural of 'magus' 'magi'. Yay for English, the language of as many exceptions as rules!

That said, promising start. I shall be watching this.

Kinda sad that it isn't archer EMIYA. I know he's a dick, but I like that dick (umm... that came out wrong).
What?! No rin/shirou?! Well I hope you fix that and give shirou all 3 girls from his routes (or any of them alone. Honestly there are a suprisingly few fanfics where he isn't in a massive harem or with another girl instead of his 3 main routes girls) I just want romance! And shouldn't they have 4 servants, one for each? Illya can also summon a servant, so shouldn't there be 4? Archer, saber, lancer and (MISSING 4TH SERVANT!)
I have mixed feelings about hermione having a servant. For one, I actually like the idea. Hermione IS a badass. Really without her harry would be useless, she basically does a good portion of the heavy lifting or as a minimum allowed harry to progress at the most basic levels. She destoryed the devil snare in PS and helped with research otherwise they wouldn't know jack. She discovered the basilisk so harry knew what to do (and not immediately die from staring at it's eyes. Btw wtf would dumbledore send fawks, thus knows harry is fighting, and not come down himself? Jerk) and thanks to that discovered the antidote, and don't get me started in PA.
Its like lord of the rings, sam did all the fucking work for frodo and it was frodo who got the recognition. Hermione did alot if work for Harry and HE got all the recognition. Yeah, no, she deserves the recognition too! And her personality isn't that of a stuck up bitch (unlike ron, bastard got jealous of his own friend being forced into a lethal contest against his will, even attacking him (he wore the anti harry pins). His personality was the worst). Rather she is just socially awkward. She may be a kid but she needs something higher to stimulate her in conversations, and at the same time she needs something unique to little brats when socializing.
Really kinda irritating how some fanfics demonize her. Not that I support her or idealize her cause she does have her flaws such as being rigid, it's just that that interpretation is so not reflective of her character.
So, yes Hermione, questionable about servants. Genius or not she is a kid, and it's weird that an all mighty weapon that is a servant is not widely known to the HP world. Maybe if it was zeltretch himself who aided her in summoning a servant or some other factor to make it impossible for HP world to replicate and summon servants, cause that's just not fair. Like what if hermionie does something stupid and shows others how to summon servants?! They get the better magic AND team shirou's assests of servants?! That's just rude.

Oh, also im not a fan of Shirou's wand. Personally I think dragon or Phoenix core sounds better. Not cause I think unicorns are unmanly, but because I obsess over the fanfic fate in time where shirou's father is alluded to have a fire affinity, and it makes since as shirou is a sword, and swords are born from fire (forges) so it just sounds cooler if his wand reflects this heritage as a connection to fire.

Medb, fucking Medb, is Hermione's servant. God dammit.

Did Hermione summon Medb?

If that's Medb following Hermione then Cu is probably thanking his lucky stars he didn't get summoned again

so medb?

Is Hermione's servant Medb?

Surprised the path you are taking Rin and Shirou's relationship considering that in UBW epilogue happened a year after the grail war where they promised each other to go to be together in the Clocktower and F/HA showed showed how their relationship progressed 6 months after the grail war, hell when they got a call from Rin's future self many years down the line showed that future Rin kept on falling more in love with Shirou to the point where was going full dere-dere on him.

Again with the fanon Troll Zeltrech he doesn't do things for "entertainment", he is a thorough magus. What you are describing is more of Merlin's shit, the cockwizard memes aren't just a joke he always pull of pranks and doing shit for entertainment if he wants.

Okay when the hell did someone summon a Servant? Please show that first rather than suddenly saying Lancer and Archer cause that took me rereading just to understand what is going on.

Next how the hell did Hermione summon a servant? she has no Command Seal and have no Grail. It was stated that the whole summoning process was done by the Holy Grail and that the summoning is just to bind the Master and Servant, it's why Shirou was able to summon Saber even without chanting a spell. No amount of chanting and knowledge would let you summon a servant if you don't have a massive source of power source, which the Grail needs 60 years of charging to do. Could Hermione even sustain a servant without a grail? Unless she makes her servant eat souls, you would need Rin or Illya levels of mana to sustain them. It shows bad forceful character insertion, to include them on the plot

BTW I'm guessing she summoned Tamamo no Mae

I could buy Illya summoning a servant or two cause she is the lesser grail and sustain them cause has done in with Berserker but it would tax her a lot unless Ruby is supplying her with mana. Thinking about it she has wishcraft that would let her achieve any result as long as she has magical energy to give, and has Ruby that could supply an infinite amount of mana, so I could by her summoning and sustaining servants but not Hermione.

If you want Shirou and co. to have more "adult" persons with them to not cause people to look too much about them just have Illya make some homunculi. The Enzberns are masters at making them, that even failures have more magical energy than dozens of magi, their combat models even have the physical stats of a high rank Servant. Illya herself is adept in it and could easily "coin" one, humonculi themselves aren't even human really but closer to a highly advanced AI with flesh and blood body barring those with actual will like Irisviel.

And summoning more Servants means more destiny defiance, HP prophecies are nebulous at best and add the fact that you have put at least 3-4 servants that defy fate. Yeah, might as well throw out every prophecy here

The idea is great but there are a lot of things to take another look over, there are also some hints of persuasive bad fanon creeping up.

First Dumbledore never put any faith on the prophecy, it was Voldemort who actually believed and obsessed about it.
-Half Blood Prince:"No, it doesn't!" said Dumbledore, sounding impatient now. Pointing at Harry with his black, withered hand, he said, "You are setting too much store by the prophecy!"
"But," spluttered Harry, "but you said the prophecy means —“
"If Voldemort had never heard of the prophecy, would it have been fulfilled? Would it have meant anything? Of course not! Do you think every prophecy in the Hall of Prophecy has been fulfilled?"
"Of course you would!" cried Dumbledore. "You see, the prophecy does not mean you have to do anything! But the prophecy caused Lord Voldemort to mark you as his equal. ... In other words, you are free to choose your way, quite free to turn your back on the prophecy! But Voldemort continues to set store by the prophecy. He will continue to hunt you . . . which makes it certain, really, that —"
"That one of us is going to end up killing the other," said Harry. "Yes."

Dumbledore also never knew that the Dursley's treatment of Harry was that bad, remember that Dumbledore is someone who wants to see the inner good in people and often overlook their flaws, like Snape. Yes he knew that the Dursley hates magic but when they accepted Harry he thought that they would at least care for him. He was genuinely mad at them when he found out about it.

-Order of the Phoenix:She may have taken you begrudgingly, furiously, unwillingly, bitterly, yet still she took you, and in doing so she sealed the charm I placed upon you. Your mother's sacrifice made the bond of blood the strongest shield I could give you.
-Half Blood Prince:‘You did not do as I asked. You have never treated Harry as a son. He has known nothing but neglect and often cruelty at your hands. The best that can be said is that he has at least escaped the appalling damage you have inflicted upon the unfortunate boy sitting between you.’

Yes I know that you did something different but it still stands he put him there because with there because it would put him out of the eyes of other pure bloods and the blood protection would make it so the even death eaters cannot harm him until he is 17, which he probably doesn't have here.

Another thing is that Zeltrech is not really a troll, he was Nasu described him as something like Jotaro Kujo, means that he doesn't give a shit about the politics of the Clocktower, its why various Lords find him a pain.

None of the Einzbern are really human, the head Einzbern Acht is more of a computer AI whose purpose is the completion of Heaven's Feel, they wouldn't think little of Illyasviel considering they consider her their greatest creation and final hope. According to Nasu if Illya fails to obtain the Grail they would shut themselves down and let Illya (if she survives) hold all the resources of the family, its even shown in the flashback in the UBW anime. Add the fact that Illya herself is an Alchemist where transmuting gold is considered basic, hell Dress of Heaven could transmute anything even humans to gold, I don't know why Illya has problems with money

I also don't know why you bother with the prophecy, is it to show that Rin and co. would do something? They have Saber, who has A-rank luck, it doesn't mean being lucky, Luck in nasuverse is the rank of which one can defy fate and destiny prophecies included. Even at E-rank someone could defy prophecies, under Shirou at B-rank Saber could defy a curse at her destiny by Gae Bolg which remember is an causality attack.

Genial capítulo esperó algo mas intrincado con la creación de una cuenta bancaria para Shirou y compañía así como una gran historia de portada para ellos algo que haga que encajen en el mundo de Harry-Potter pero espero que eso lo aclares en los siguientes capítulos.
Sobre Hermione invocando a Medb fue interesante, pero espero que esta Medb sea mas reina guerra que prostituta barata. Si es preferible que Medb sea una mujer mayor para verla molestar a Cu mas abiertamente en público.

Did Hermione summon Medb? Also I am enjoying this story a lot! I can’t wait for more! I bet Shirou will be good at transfiguration, it’s like alteration, I feel he will be especially good at the match to needle transformation, cause needles are pointy; probably conjuring things as well, like his tracing. And I feel bad for anyone who tries to read his mind.
Anyway, please keep up the great work!

Interestinglooking up for the next chapter

Looks promising. I'm wagering that one of the key differences between spellcasters is style. HP magic is fundamentally different in its application compared to T-M magecraft. Thank goodness the plot is about the fate crew LEARNING HP magic rather than a simple combat test. Magecraft may be fading in T-M, but it's still absurdly deadly in the right hands (though I think that has more to do with the social environment T-M magi put themselves in than any pure power inadequacy on the HP wizards part).

Actually everything so far is good, the premises, the plot and the desired mc's are there, i hooe you update soon

Seems interesting, but not much has really happened yet. Looking forward to next chapter