They won't give him any orders, in Lastwall.  They can't.  His obedience is not presumed and he is not yet competent to offer it up as an oath.  He is increasingly sure that everyone, however unpracticed they might be at reading Chelish people in general, can see straight through him and tell exactly how desperate he feels to be in a chain of command, to have superiors who can tell him what to do and where to go and how to go about it.  Even if they can't tell about him in particular it might be a common way neophyte Iomedaeans lean, because they do have standard recommendations for it: if you are seeking advice from someone who cannot Lawfully command you, and you are the sort of person who might be inclined to take nonbinding suggestions as orders, you are encouraged to imagine that a friend who is of equal rank to yourself is giving the advice.

Blai does not have any friends unless you count Valia, which he doesn't think Valia would be likely to want him to do - at first he'd imagined she'd either accept his situation altogether or else (more likely) reject him completely, and that assumption was very stupid of him, but whatever confused halfway thing she wound up doing is probably not friendship.  And anyway the reason Valia does not outrank him is because she, like Blai, doesn't know what the fuck she's doing, so that's a really useless exercise.

So instead he prays.  If Iomedae told him to do something he would certainly do it* but there is almost no risk of that actually happening, which makes it a great way to process advice-that-is-not-orders.

The Lastwallers he speaks to all advise him to stay out of the pamphlet scene in Westcrown.

He can see their point.  It's a mess.  A jumble of criminal garbage and complete nonsense, kept compelling by the occasional fragment of an insight packaged with a couple of jokes and some fancifulness about Tian Xia or badgers or cannibalism.  They only sometimes rise to the standard of "junk" and that's a fair reason to think that his would be the same.  A pamphlet invited his death and he doesn't, in fact, yearn to die again right away.

When he asked de Luna, the man thought Blai ought to write a book, instead, specifically because they are long and dull and people mostly don't read them and therefore mostly cannot be inspired to murder anyone by them, at least not in great numbers.  Blai objected that he doesn't know what to put in a  book: he needs questions, or recriminations, or demands, or something, from the people of Cheliax, the people wracked for generations by - Blai's ilk - he needs to know what they want to know before he can write anything long.  De Luna, who is a professional interviewer-of-people, suggests that he could just interview a lot of people.  He doesn't have any further details on how to choose interviewees so it would have to be done cold.  Perhaps with Blai telling petitioners at the church who'll accept a half-catechized Select for their counseling, apropos of nothing, that he used to be an Asmodean priest and would they like to ask him anything about that.

This is of course a completely excruciating idea, which doesn't make it wrong.

What does make it wrong is that - this would waste people's time.

There are, Blai believes, a lot of people who might specifically need someone in his exact capacity.  Someone could have sent a child away to the Crucible or a place like it and have never heard from them again.  (At this thought, he checks if he is perhaps obliged to look up his parents and sisters.  They don't think he is, as the present state of their relationship is that they have had no contact whatsoever for two decades and Blai was at no point even contributing to the household finances or anything.)  Someone could have spent their entire life wrestling with a pet Asmodean heresy they couldn't shake and know that they are supposed to say, now, that the whole religion is wicked and ought to be thrown out entire, but still be worried at by that niggling confusion they never reconciled and never dared to ask about.  There are so many ways people could need closure.

He is not going to find those people by accosting random individuals who are queuing to see Iustin and telling them, pardon me, I am a genuine Select of Iomedae but was for some time an Asmodean Chosen, does that happen to be relevant to you in any way sir?  Ah, no, you're here because you molested your cousin ten years ago and want to confess while you're in town for market day, and now you're alarmed that I approached you and it's going to ruin your state of mind up through when you finally get to talk to a normal priest, especially because you think for some reason Iomedaeanism is the state religion now, I see.  And you, miss, next in line -

Blai would hate this beyond all reason, but that's not the important thing, the important thing is that it would be bad for Iustin's flock to be diverted when they don't have Blai-specific problems.  If Blai, who cost more than five thousand gold to have up and walking again, cannot yet be made into an interchangeable priest who validly stands in for Iustin for the kinds of things people expect of arbitrary Selects, then he needs to do something else.  He needs to do something.  Iomedaeans do things.  He needs - the right expectations, lined up for him.

Because... why him?

An entire year's worth of Lastwall seminary graduates.  Not an orison between them.  They are all better than he is.  They know what they are doing.  They chose to do this with their lives, and had real other options.  And She reaches down from Heaven and picks Blai?  Why?  What for?  Fort #11 wasn't that important.  There was no prophecy suggesting that if he didn't have spells to take down that glabrezu it would go on to do some specific awful thing.  He has no very remarkable perspective on politics; his most substantive contribution to the convention has amounted to "they sew the buttons on too tightly on the Worldwound coats"!  While the Worldwound and all of its coats are winding down as a concern, not this year but certainly this decade!

Why Blai?

And if you think about it that way, and if you pretend that all those conservative Lastwall church fellows, nervous and not so accustomed as Blai to nervousness - if you pretend that they are all your friend who doesn't outrank you and, as they have only one reason for one opinion between them, this friend has only one voice - if you pretend that this friend of yours who thinks that the entire pamphlet scene is cursed, but does not and cannot order you to keep well clear of it, is standing back and letting you decide -

Then "why Blai" is really the question that remains.

--

*Blai does of course know that demons love pretending to be Iomedae and present themselves to people as Iomedae far more frequently than does the goddess Herself.  His plan if it ever comes up and She asks anything odd-sounding is to ask Her to interfere with his prepared spells in a way he expects demons cannot.