Nah, you should meet the High King first, there's complicated politics there.

I assumed there was politics and that it would be easier to get an audience with the High King if Maedhros introduces me but if it makes more sense to do it the other way, then let's do that.

Maedhros thinks we should do it the other way, I don't know, I hate politics. We'll do what he suggests. He has in fact probably told the High King about you by now but I guess shouldn't formally introduce you? Dunno. Maybe so it's clear you're not, like, aligned with us in any respect. I really hate politics.

...Should I not walk through the front gates with you?

I'll ask. 

- nah, that's fine. Apparently.

OK. I assume Maedhros has suggestions for how we can get an audience with the High King?

That won't be a problem.

Malak will readily follow whatever those suggestions are.

They approach Barad Eithel and are greeted and escorted inside and invited to rest and change.

Resting! Changing! Correctly interpreting the invitation to change as not extending to faces!

And then they can have an escort to meet the High King in his study!

How lovely. They will follow someone to said study.

There's an Elf sitting at the desk. "Do come in. This is about resuming shipments to Brithombar?" Please confirm that it is.

"Yes, it is." How soundproofed is this room? My ability to keep up a convincing conversation on shipments to a city I know next to nothing about is limited.

I am very confident in the soundproofing. The door closes. But there's not much cause to speak aloud.

True enough but people might wonder why we're carrying on a trade discussion over osanwë. What have you been told already?

You helped Lúthien drive Sauron out of Tol-in-Gaurhoth, with magic we haven't seen before.

...That is true but very incomplete. Please don't panic.

"I swear that I am not a servant of the enemy, that I presently intend you no harm, and that I shall do everything I can to ensure no harm comes to you during this meeting."

He doesn't even blink. All right. What's the more complete version?

I'm from another world, I showed up here due to a still-unexplained magical accident, or it's possible that I was captured by one of my enemies and all of this is an elaborate hallucination trying to trick me into committing great evils. The magic that is common to my world works here and doesn't seem to directly interact with local magic at all. I ran into Lúthien, then was led to Nargothrond. I broke Lúthien out of house arrest in Nargothrond - mostly - and then we went north, came up with a plan, and I snuck into Tol-in-gaurhoth to save her boyfriend and whoever else I could get out. I saved thirty-four, sixteen of whom committed suicide shortly thereafter. I gave them a choice. Lúthien and I went back to demolish the tower at tol-in-gaurhoth and stop Sauron from following us, he fled incorporeal in an unknown state of injury. The surviving rescues are settled near the falls of Sirion, I went back to Nargothrond and got Celegorm and Huan to come north with me and see if we could track down Sauron and finish him off, but he's already made it back to Angband we think. My form of magic can be taught to elves, probably local humans and dwarves too, and I'm willing to instruct some of your people. There is potentially a way for me to kill the Enemy with it but I am not revealing details on that yet because I don't know who can be trusted with it. That's the short version, I can give more details if you want them.

What can your magic do, and how long does it take to learn? How much use would it be to the Enemy if it fell into his hands...

Theoretically, anything. Individual practitioners specialize but you can specialize in a lot of different ways. The ones I can teach best are destruction magic, shadow magic, shapeshifting, and teleportation. I can also do invisibility but I can't teach it well. The basics can be taught in a week. You get more powerful with practice, it will probably take longer than we have for any of you to get up to my level, but I'm pretty powerful even by the standards of my world where this is much more common. Learning a particular spell takes a week to a month, generally. It's possible to learn spells that you can't cast because they are too powerful for you. Lots of useful spells need to be reinvented because I only have access to the ones in my head, Curufin has a bunch of people on that and they've made some progress over the last two months but not a ton.

If it fell into enemy hands it will probably be very bad. I don't know if he can use it himself, or how good a maia like Sauron would be, that would be the worst case, but I don't think elves have a very large natural advantage at this sort of thing, if any. And there are supposedly millions of orcs.  Also, it can potentially do plane shifting and it would be a bad thing if Melkor conquered this world and then plane shifted back to mine, mine has a lot more people than yours does.

How many people know of it right now?

Of it's existence? Lúthien, Beren, seventeen elves, all of Nargothrond, Sauron, Celegorm, Huan, you. Know the details I've just shared? Curufin, his students, Celegorm, Huan, Lúthien, Beren, you. Probably Maedhros, I expect Celegorm may have told him by now. It's possible that most people assume that I am a Maia and don't realize it is a separate magic system. Possible but unlikely that this extends to Sauron. Odds of him knowing anything about how it works or that it can be taught are pretty low, fortunately.