The Valar announce that they've done as much as they can in Singularity (they can't bring back peoples' babies in that critical period either, but they can get them earlier versions) and are setting up portals between there and Sanity as soon as they are confident they've cleaned up the plague. A bunch of Elf architects have this wild idea for a fivedimensional city where alternating intersections are interdimensional portals between various Valinors and they get eagerly to setting it up.
"I would be willing to demonstrate the capacity by bringing in a few daeva you name. I hope we can develop a partnership which would enable freer sharing of resources than that."
"I'm sure we could arrange to have him sent to your planet under his current summon. Surely your methods will still work later on."
"During the trials demons are allowed conjured writing if they have anything to say for themselves," she assures him.
"I am aware. That does not meet our standards for rights of the accused either. And being unable to talk ever again does not meet our standards for acceptable restrictions on prisoners."
"I understand that it might be necessary given your resources; that does not make it acceptable given ours."
"I can talk to my superiors but I can tell you now they're going to want to know how you can guarantee arrest."
"Binding doesn't let it talk at all. In writing, yeah, it could, we have to corroborate."
Sigh.
"We can travel to Hell for law enforcement purposes. It's not safe for us to do but the Valar are immaterial and not in danger."
The written is insulting ("why do we gag demons?" "all of the above", and similarly leading questions) but the practical just requires turning up with an adequately bound and tasked daeva.
He has Minor make him a circle and doesn't snark on the written at all and then he's licensed and can take Ister instead of Minor back to Jupiter with him.
He actually has a hard time getting into the right mindset for the Imperius. Other people not thinking daeva are people will do that. But he gets it eventually.
And now if anyone wants to check he is in fact a licensed summoner.
He starts going down peoples' lists of their friends.
He promises everyone that this will be ongoingly available from now on. He takes a break to eat. He goes to find Cam.