"Fucking great.  Sevar, are we on the same side here?"

"I don't know and cannot speak freely about most relevant considerations. I think I broadly want Snack Service to succeed at what it's trying to do."

"Are you by any chance on Asmodeus's side and Cheliax's side."

"Yes." It's a lie but one she tells unhesitatingly, at this point. Asmodeus believing it is good for the only thing that matters.

"I admit I wasn't expecting that.  Is there a reason you're hanging out with Keltham and not running Project Lawful?"

"Yes."

"You frankly had no right to expect any other reply."

"Hi, Sevar.  Wish we could just kick back on the edge of the platform, watching the lava flows, and talk harem reunion things.  But I'm guessing it wouldn't go that great with all the genuinely important questions I can't answer yet."

"Likewise except I don't even wish we could talk harem reunion things. Are you here in the hopes Keltham will give you valuable stuff for no apparent reason?"

"Hope no, knowledge yes."

"You are a very different person from that Carissa Sevar I once knew, and you will become more different yet.  But for whatever it can still mean, I say to you now:  I forgive you."

Ione is not in fact even on her list of people that she meaningfully wronged; Ione had negotiated her good treatment with Cheliax before Carissa had any power.

She tries to imagine what Carmin would say. Probably that, to Ione, Carissa was Cheliax, was part of how it twisted people, and so the hurts Cheliax did Ione are, to Ione, hers in part. 

None of it really feels like it matters, alongside the end of the world. 

And she does want to thank Ione for prophecying for her everywhere, that's been very useful, but she doesn't acknowledge around Keltham that her cult is plainly a Nethys/Cayden plan.

She nods.

"Yeah, I know.  You didn't do that much to me, by Cheliax standards.  What's a measly 20 lashes that I didn't even try to get out of?  But you did also hurt some other people I cared about."

"I forgive you for that too."

"Is there anything for which I still ought to ask my own forgiveness, of you, that you know of?"

Her face definitely wasn't readable. Oracles of Nethys are very annoying that way. 

The thing Carissa's going to have a hard time forgiving is that Nethys could have maneuvered for Keltham to be unable to attempt world destruction plans and to have to just work with Iomedae, and didn't. She has no idea if Ione understands that, let alone endorses it.

"I wasn't actually using foreknowledge there, just guessing, so I can't actually read your mind if you were trying to think anything back."

"If I had to guess again, I'd say that I'm sorry for not answering your questions, even though it's the kind of halfhearted apology where I think I have reasons and I'm going to go on doing it after the apology.  Or if it's about the other thing, then I'm sorry again in that poor halfway fashion, where I think I have an excuse, where I say that what I feel about it myself is irrelevant because Nethys would retroactively not have made me His tool if I would predictably betray Him later, and it is better that He have that tool than not."

"And if it's anything else you can't say, and I can't guess, then please accept the apology I'd probably give if I knew."

"We should probably not linger here."

"Yes, quite.  There are spells with time limits running.  Keltham, I do require directions from you on how to handle this... complication."

"Telepathic Bond between you, Tarnish, and Ione.  Split to three groups, Ri-Dul and Keltham, Tarnish and Carissa, Ione and Pilar."

"Ione, do you know my intended business protocol and rules?  Also, do you or Pilar need a ride home afterwards?"

Keltham is handing over a small Bag of Holding to Ione, even as he speaks; and to Pilar, the +4/+6/+6 artifact headband that Snack Service gave to the scarred maid (Tarnish?) earlier.

"I can give Pilar a ride back to the Material once we're done.  We shouldn't need to reunite before that."

"I have a prediction about the contents of the transactions you want us to do, but not any special rules about them, though I could guess at sensible ones."

"Swear any promising-looking Efreet groups to secrecy about literally all aspects of the remainder of your negotiation and transaction, including the payment offered and the service sought and whether or not the transaction with you concluded successfully at all, before discussing any other trades with them."

"I put four denominations of payment in your bag.  If an Efreet group wants more payment than one of the largest denomination for one full service, or more than the least denomination of payment to agree to absolute indefinite secrecy, walk out."

He finishes casting the Telepathic Bond.

"You people try for such fascinating amounts of secrecy.  It reminds me of various episodes in my own youth that I will dramatically hint at, but say nothing more about."

"If we're not meeting up again after this, I've got a question.  Is there a reason that you, Keltham, are wearing the other of the two artifact headbands that Snack Service bought from Dispater?  Because I'm a little upset about that being how things turned out, especially when I was under the impression this was important for fighting 'Mister Doomlord', and I wonder whether Lord Dispater would be happy to hear about -"

"I traded away an even more powerful artifact to get that one, to somebody who was much more clearly on your and Carissa's side about the Mister Doomlord business."

"Sevar, you want to get started on our shopping while those two flirt?"

"Sure."

Did agreeing to let Keltham use her headband actually make him likelier to end the world? Or likelier to get something better than that? - no point trying to figure that out now. 

Welcome to the City of Brass!  Everything here is made of brass and also on fire.

Complicated divine arrangements and negotiations will have ensured that you don't meet anybody from a different planet or Prime Material plane while you shop.  You may, however, run into a devil or two, maybe an inevitable or a daemon, or denizens of Earth or Air.  To meet an angel here is not unheard-of, but demons are less welcome.

It is not literally true that everything imaginable is for sale here, but they do have a lot!  You're on sharply limited time, though, and are supposed to prioritize your main shopping trip.  Still, you've got about 50,000gp of spellsilver, at new Golarion prices, or four times that amount in old Golarion prices.

With Tarnish's approval, you could also trade away a Wish diamond here, given suitable promises of secrecy - though Keltham has expressed some worry and reluctance about arming Efreet with that kind of power, or making it obvious that the diamond market was flooded from Golarion.  Keltham/Tarnish will be happier if you trade the Wish diamond to a particular noble Efreeti intending to use it themselves, who swears an oath about how they'll use the diamond and that they won't tell anyone about the transaction.

(If what is written in many books is correct, almost any noble Efreeti can cast Wish up to once per day, given a Wish diamond.)

Carissa wants her mental enhancement first. She'll shop afterwards, if it seems like a good idea once she is smarter and better and cooler.

She doesn't, actually, prefer this world where she becomes incredibly smart and powerful to the one where Keltham never comes to Golarion and she goes to Hell. But it's - something resembling a consolation prize.