He feels an open summons and lets it grab him -
"Well, humans back home don't know, unless someone spilled the beans and I didn't hear about it, but it might be relevant to you, and this is a different world. But kindly don't go telling everybody until I've thought about it some more. Some of us daeva are dead summoners. If this world now works on afterlife rules like my world does, you will now be some kind of daeva after you die."
"Well, if your world now works on those rules, it's much better than the alternative - and off the top of my head I'd peg you for a fairy, not a demon."
She has no idea what her world's alternative is, but that means his world's 'will show up as a living being' is certainly much better than '???'
"Well, no, Fairyland's different from Hell in addition to fairy magic being different from demon magic. Fairyland's more interesting all by itself. I think but cannot be sure that it's about what kind of magic suits you best."
"I've never been to Fairyland. I have seen pictures of the landscapes, it's very pretty in a lushly sylvan kind of way, but have never heard rumor of an El Dorado."
"I like forests," she says wistfully, then sobers. "Thanks for telling me. It would have been kinda a shock." She looks at her pocket, which still holds the floating pencil for earlier. "Uh, mostly. The telekinesis thing I guess would be similar." She considers. "Are your 'parlor tricks' similar enough that people have practice, do you think? You said there's some telekinesis." Faint smile. "Maybe I'd just be weird and super competent."
"There is extremely tiny parlor trick telekinesis. It is slow, requires a lot of concentration, allows next to no precision, and unless you're preposterously good at it won't work over distances greater than an inch. Fairies can move pretty much anything however they want. I don't think practice makes much difference."
"I don't know that much about how naturally occuring demons do it because I haven't met any new ones," says Cam. "In my case I was recently dead and had twenty-two years of knowledge of stuff-that-existed to use. I think it may be that naturally occurring demons can make themselves air and water and some basic food instinctively."
"Makes sense, just, not quiiite what I was thinking. I meant more-" she stops to think. "You asked for the make and model of your empathy blocker, earlier. Did you already know before you-" won't say died, it seems too weird when he is standing there "-became a demon that you needed that much detail? Or did you try to make things with less detail and fail? Or do you just... know somehow... that that's how much detail you need to know before it works?"
"Mmm... well, I knew a few things about how demon magic worked before, I'd met demons and asked them questions," says Cam. "And then I experimented some when I had the magic myself."
"No one knows on my world except the people who are already dead, and maybe some handful of summoners whose summons told them who have not shared the news. I probably would have told someone before but no one lets me talk when they summon me."
"Um. Seriously? Not one person has been cocky enough to assume they'll- I dunno, be able to send you back instead of giving you their soul, you said sending back is a thing- and had a whole 'okay five minutes later he is friendly and prone to handing out sweets' experience and decided you were safe? That sucks."