"It's a pleasure to make your acquaintance, Mr Dalkaila." 

Like most people, she doesn't quite have the knack of making social pleasantries sound spontaneous and genuine, but she does give Felix a shy smile. 

Felix fumbles a bit at the realization that there are Social Rules Going On and he has no idea what is the proper etiquette. But he does smile wider. "The pleasure is all mine, Miss Katherine Dyer."

He has an American accent; they'll excuse him a few minor lapses in etiquette. Americans. 

"Katherine, Mr Dalkaila is in possession of some rather unusual magic," Cat explains. "We were hoping you could take a look at it with magesight." 

American from an alternative future Earth. He doesn't think the British are still that formal.

"If it isn't too much to ask, of course."

"No, it's fine, I can do that," she assures him. 

"Um...whenever you're ready?" 

"Go ahead... Unless I need to do something? I'm... being passively magical right now, but I could do something actively magical if that is required."

"Both would...probably be useful? I'll start by seeing what you look like when you aren't doing any magic?" 

Katherine brushes her hair out of her face and stares at Felix, squinting in concentration. It doesn't look like she's doing anything other than staring in the normal way, but there's presumably magic going on. 

"Um, well, it doesn't seem like you have an elemental affinity? I don't think that really counts as unique, though; I know more than one person in my classes with an Aether affinity..." 

Felix nods noncommittally. "I could show you what I look like when I'm actively using magic then?"

And assuming there are no objections, Felix will create a candle-sized flame above the palm of his hand.

Startled blink.

"...do that again?" 

Okay. He does that again.

She watches very very closely. 

"It doesn't look like you're using Fire magic at all, how are you doing that?" 

"Uh... I don't know the underlining mechanisms. I'm... just doing it."

"Do you notice anything else strange when he isn't actively using magic?" Cat checks. 

She squints again quickly. 

"Hmm...oh, um. I know how to tell whether someone is a shifter or a vampire, and you're. Neither of those. Obviously. That's...about all. I'm sorry, I don't know how to check for very much beyond that." 

"Thank you for your help." Felix says earnestly.

"Yes, thank you, Katherine," Cat agrees. "You've been most helpful."

It's a clear dismissal, and he's maybe being a tiny bit short with her, but he's running out of the energy required to achieve the same goal more subtly.

"You're welcome! I'm sorry I couldn't tell you any more than the basics." 

She takes the hint and leaves, with a little curtsey in Felix's direction. 

Felix distractedly gives her a little bow. "Well, that was informative. I was curious if she could notice if there was any difference when I was doing other kinds of skymagery or more powerful magic."

"I think any magic you perform will be perceived as unusual," Raven says, "unless you are deliberately attempting to mimic the local system." 

She frowns. "That is slightly limiting...but at least it could be worse. You read as human, at least to someone with very little training in magesight, and may be able to completely pass for a native while not actively using magic." 

"Well, a native with wings... Is there magic to illusion them?"

"There is, but Katherine isn't good enough with illusions to cast one that would stick, and anyone else we asked would want to know why." 

Pay no attention to the invisible (massive, gaping, bleeding) silences where they talk around the fact that their father could have done it—

"It would be more suspicious to have an imperfect illusion than none at all, since trying to hide the wings suggests that there is a reason to hide them, whereas wearing them openly, while unusual, is not so much so that someone's first thought will be 'ah, yes, this must be a visitor from another world with strange magic'." 

The gaping silence is barely a moment of hesitation from Felix's perspective.

"I'm mostly concerned with increased attention and more magesight scrutiny. Granted, I might invariably get that by just being obviously foreign and fail at fitting in with the time period." Pause. "Are people going to assume I'm a magical guinea pig?"

There is an odd effect to the words "guinea pig" such that they understand both as meaning "a species of animal" and also "test subject".

Interesting idiom. He has a feeling he'd be fascinated by that if he could muster the energy.

"It's...possible, but incredibly unlikely. They're most likely to think that you created the wings yourself, making you a magister, or that you paid an exorbitant sum for them, making you a wealthy eccentric. Neither is a particularly dangerous assumption, so far as I can see." 

"Okay. That sounds satisfactory, and wealthy eccentric sounds like the exact sort of thing I should come off as."