"What kind of assurance would you like from him?"

"I don't want him going and arresting my friends, or turning them in so someone else can arrest them."

"Do you expect him to need to meet them or will the duration suffice for him to avoid it? - the duration and your friends' belief in the visible effect of the spell being genuine, I suppose."

"Nah, Chief, sticking an illusion of a key on your forehead is basically the oldest trick in the book."

"Do you mean to say your friends cannot distinguish between enchantment and illusion spells? The underlying spell structures are fundamentally different!"

"I'm a wizard and I can only tell them apart some of the time!"

"Is there any chance they'd take my word for it that I saw the spell cast, assuming I prepare Detect Magic tomorrow?"

"Pretty sure that would make them more suspicious."

"...but watching either Fiducia cast the spell will pass muster?"

"Probably? —You vouching makes things worse because they think I sold them out to Irabeth and you're, you know, an Iomedae guy. But everyone knows Abadarans won't give you so much as a drop of water unless you pay for it."

"And they... won't believe that he can't lie?"

Shrug. "Everyone knows they've got ways to fake that if they have to."

"I don't suppose your associates would be willing to participate in my survey of theological knowledge?"

Nenio if you will stop asking people that I can get you insider Asmodeanism information he isn't going to say that. "Why would they believe that you paid him for the spell and not that you paid him to stand there and pretend while you put an illusion on your head?"

"You don't have to be a genius wizard to tell which one of us is casting a spell." If he knew the tricks for casting without moving your hands he'd be halfway to Nerosyan by now.

"If you say so. Well. If we're all on the same page about how far this information goes, I can go price the spell."

"Sounds good to me."

Everyone in the room seem agreed?

Yep, nodding all around.

Great. He will go downstairs and find Rathimus and find out what the damage is.

The Fiducia can be located. "Hello, Select. If you're here for more scrolls, I have an updated pricing sheet."

"Good to know. What's the rate for a Truthtelling?"

"Six gold crowns if you want it now, or you can place a bid for any that I have remaining at the end of the day. I have one left that I haven't already sold, another that Anevia's reserved — I'll know in less than half an hour if that one is available."

(This is notably more expensive than a Truthtelling would normally be in most countries.)

"Does this change if I mention that I also considered going underground to retrieve the mongrel Fiducia Dyra?"

"It would very likely affect the price at which you could bid for a Truthtelling for purchase at the end of the day, but not the price to purchase one immediately — I have indicated to prospective customers that that price could be relied upon to remain stable throughout the day, so long as I still had Truthtellings to sell," which he had not expected to be a problem, but apparently he needed to price them more expensively if he didn't want to sell out before supper!