"Doesn't it not work some places?"

"It doesn't seem to work here at full size - I haven't looked into any edge cases - and it isn't understood to work in the mortal world people usually access from my world at all, but it did work in Ring's world."

"I guess we'll collect more data on that in the course of doing everything else we might want to do. Do they want to leverage the option of speeding up for anything?"

"Signal didn't mention it but if it can be done more conveniently I bet they will."

"They'd have to stay far away from anyone with the same name but it'd be easy enough to do with debt."

"Do you suppose taking a likeness of somebody for them to check so they aren't surprised is safe?"

"I'd expect so but I don't know for sure."

"I mean, they still... know what you look like... I'm not sure how to puzzle it out without trying it."

"I think knowing that I exist somewhere and am named what I'm named isn't enough. If you read a book, the author's name isn't entanglement unless you meet them."

"You know this how?"

"My father ill-advisedly read books, once he learned of their existence! Then we had to go track them down."

Giggle. "And do what with the authors?"

"We left things in his house!"

"That helps with debt but not with writing their name down..."

"Father didn't see the authors, so the names didn't hurt him."

"What'll happen if he meets one who was dead when he read the book?"

"I have no idea! Maybe we should get someone not entangled with any courts so it's safer to run these experiments."

"Well, if we resurrect my entanglement she'll hopefully meet that description but I don't know if I should expect her to be very cooperative."

"Maybe with sufficiently simple instructions."

"Oh, I think she's probably competent to follow simple instructions, I just doubt she'll want to help."

"I suspect I could talk her into it eventually."

"Is that a technically-not-inaccurate euphemism?"

- headshake. "All this nonsense around that could hurt us really badly if it cared to, we can't do anything that'll make anyone - feel obliged or invited or inspired to intervene. I suspect I can talk to her, because I am good at that."

"Just checking."

Interested parties can get lessons in arcane magic from the person who tutors royalty in it. 

Arcane magic is done by learning spells, and spells are complicated to follow and to hold in your mind; everyone develops a different shorthand for them, and even the shorthand can stretch several pages for a simple spell. Here's a longform account of a very simple spell; it'll take hours to get through, and probably weeks to be fluent with.