"If you keep it your god doesn't need to grant it again. I have never heard of a god replacing a spell their cleric had saved on purpose, which might mean it's impossible or just expensive or just better to predictably not do."

"Sure, go ahead."

...it seems like an easy thing to experiment on, but ok fine Keltham will figure out what to do about Sanctuary later.

He boops Carissa with an unidentified first-circle enchantment-compulsion spell!

Like the truth spell it puts a symbol on her forehead. "...not obviously subjectively anything," she says after a second. "I am an apple. I have never met Keltham. ...not a truth spell."

"I think it's a specialized truth spell," the security wizard says. "I haven't seen it before, though."

"Offer to sell me your shoe for 18,000 gold pieces?"

"I will sell you my shoe for - 

- wow, okay - 

- one second, try selling security something -"

What does he have that isn't worth 18,000 gold pieces?  Even his fingernail clippings or saliva contain his DNA, and if sold unencumbered could be used in principle to - oh, right, time, he owns time.  "I'll tell you the result of adding two plus three in exchange for 18,000 gold pieces," Keltham says to the security wizard.

"That's not a fair trade," Carissa blurts out. 

Wow, Abadar is such a specific god. 

Interesting!  Keltham's mind immediately goes to the obvious next thing to try!  "If one plus two is three, I'll tell you the result of two plus three for 18,000 gold, but if one plus two is four, I'll tell you two plus three for free," he says to Security.

Carissa has been awake for too long. How does Keltham do this. ...one plus two does equal three so it's the same unfair trade as - "not fair," she says involuntarily, but not until her brain has caught up with Keltham.

To Carissa.  "I'm about to describe a fair trade, try to claim falsely that it's unfair."  To security.  "I'll tell you the result of one plus four if you tell me three plus two."

"Not fair," declares Carissa. 

"Well, that explains why there's a separate Truth spell and a Fair Division of Gains from Trade spell.  I was wondering if this one was just strictly more powerful, and maybe there's a way to use it that way, but it's a lot more cumbersome at least if it doesn't rule out false positives.  Sorry about this, by the way, but doing it anyways for the obvious reason, I'll tell you one plus one for ten thousand gold pieces if and only if you know of something about which the Chelish government is actively deceiving me."

See this is why she needs a HEADBAND - is "I'll make an unfair trade conditional on a false thing" fair or unfair or - and now someone has cast Dominate Person on her and wants her to keep her mouth shut so they at least must think the correct response to this is silence - it's incredibly hard to think under Dominate Person and whoever cast it probably does have a headband so she'll just trust their judgment. 

Keltham sort of wants to ask Carissa about more personal things, but - that seems a lot less like fair play.  He's not even sure how he could ask about it being okay to use a spell for that, afterwards, without making it seem like he was trying to extract permission from her, which seems sort of like trying to press an oath out of somebody.  (There can ever be non-self-originating requests to swear to something, there's standard Keeper oaths after all, but it has to be set up in an extremely careful way to make it a mutually expected-beneficial interaction that doesn't proliferate social pressure to swear oaths over smaller and smaller things.)

It doesn't seem much worth trying to ask things more intricate; he covered that territory with his earlier experiments, and if they could defeat the truth spell they can probably defeat this too.  "Not sure how expensive it is to dispel something, or how hard it is on you to leave it up, but I'm fine if you want to dispel that now."

"It doesn't feel like anything when you're not trying to sneak deals past people," Carissa's mouth says for her, "and it's probably short duration, and Dispels are valuable. I don't mind leaving it up."

And then the Dominate Person comes off, which is nice, she wasn't even trying to resist and it still felt like most of her head was pushing against a brick wall when she tried to use it. 

"All right, I used up all my second-circles already today, and next up is three third-circles I don't understand.  Evocation, Divination, Illusion."

"Third circle cleric divinations....uh, Aura Sight, which shows Law and Chaos and Good and Evil, Detect Splendour, Detect Wisdom....Guiding Star but that's for navigation..."

Oh, that Aura Sight sounds like one he shouldn't give time for local Governance to fake, just in case everybody here is secretly Good.  "Casting the Divination now," Keltham says, and goes through the brief gestures that feel appropriate to 'untying' the spell and 'flicking' it loose.

Carissa is Lawful Evil! Security is Lawful Evil! There's another Lawful Evil outside the door! Keltham himself has an aura of Law, but not one of Evil.

Lawful Neutral? - Keltham thinks fast enough not to say it out loud, in case they don't know that, somehow, and don't like learning it.  He doesn't count as Evil or Good?  Or does he have enough Good in him that it balances out, or -

"That was Aura Sight, yeah.  I wonder why my god would've given me that - you'd already know if one of the people here was secretly Chaotic Good or something, right?"  Do they not have access to this spell, somehow?

"We do have that spell. Uh, people who aren't very powerful don't register, so there isn't a way to know for sure about the second-circle girls, but you having the spell doesn't change that, that can't be the problem your god was trying to solve..."

"When you arrived here you didn't have a visible aura, because you weren't very powerful," Security says. "You acquired it at some point after you were selected as a cleric; your aura communicates that your god is Lawful Neutral, but isn't information about your personal alignment. The same for other clerics; a Lawful Neutral or Neutral Evil cleric of Asmodeus, if there were somehow one, would still read as both Lawful and Evil."

"You didn't think to mention earlier that my god was Lawful Neutral?" Keltham says.  He's actually puzzled by this; it seems a strange piece of info to withhold - oh that's a plausible reason why he got Aura Sight, so he'd know.  But surely Chelish Governance would realize that his god could, in fact, grant him that spell, sooner or later, if they didn't tell him, as apparently they didn't?  Or just that Keltham would hear about Aura Sight somewhere and ask what he detected as?  Keltham is confused by why exactly they would withhold that of all info.

- shoot. Carissa's pretty sure that's just a straight-up error. They were considering in the hours after it happened whether to tell him it'd been identified as Abadar or whether to tell him it was an unknown LN god, but she wasn't personally going to tell him because she doesn't have Aura Sight and ostensibly isn't getting routine reports on him. Then the Nethys thing and the Otolmens thing and the devil refusing her soul all happened in quick succession and apparently no one ever took Keltham aside with the news. It's not her error, in the sense that she isn't the person who was supposed to do it; it is her error, in the sense that she could and should have ordered it, her paying attention to it would have been adequate for avoiding it. 

She thinks loudly that it makes no sense for a hypothetical Chelish security that was hiding nothing not to have noticed that, so she can't think of anything better than apologizing, explaining that Aura Sight is also possessed by Chelish security and that they knew Keltham's god was Lawful Neutral, and assumed Keltham knew that because people generally do when selected by a god. And there's a team of people researching god-symbols and intending to report to him on candidates for who his god is but all they have at this point is a moderately useless longlist.