"Irori's nephew supposedly ascended by writing a perfect book, which if it's true or metaphorically near-true suggests either that Achaekek only prevents duplicated ascensions, or that ascensions use up some conserved resource of local divinity specialization. There are other members of the Vudrani pantheon who come with similar stories of mortal ascension and which are equally, let's say, subject to potential doubt. If we take those stories at face value then they predate the shattering of prophecy, and are probably a sort of event that's allowed by ancient gods. However we are not going to settle object-level issues on this level quickly, and there's an unknown curve of increasing danger before we use your Wishes in Hell."
"I am largely expecting you to end up reasoning more clearly than myself. From a standpoint of dath ilani tropes, which, to be clear, haven't always worked for analysis, this story would obviously be shifting to have you as the protagonist, along with a contrived reason why you've got to work by poking me along highly constrained directions, and can't simply go off and solve everything yourself using your own solutions. I am an average punk kid from another plane, and you are the incredibly driven person that I noncoincidentally landed on at the Worldwound. I'm effectively certain the abilitystats here don't capture all underlying capabilities of thinkoomph, but the Intelligence abilitystat still counts for an awful lot. It's not just possible but probable that, driven as you are, you can spend a week of subjective time having higher boosted Intelligence than anybody in dath ilan and rederive more effective thinking skills than anything they were able to teach me at INT 18. I wouldn't bet on you against a higher-rank Keeper but I'd bet on INT 29 Carissa against INT 29 Keltham in the limit and maybe even a week later."
"That I do not, right now, have confidence in being able to navigate the Pharasma-looking-through-me aspects of that - or for that matter, confidence in not just having you talk me out of destroying the multiverse because you can talk me into anything - is why I'm not okay with you boosting to INT 29 before I do."
"Right now, however, you've been free to actually think for a matter of a few hours, busy ones. You still thought initially that most people in Hell didn't want to stop existing. Your entire cache of theology comes from Cheliax and needs to be invalidated. I have been thinking about this for a month and you have not been. All of your reflexive cognitive cache about whether Carissa knows more or less than Keltham about Golarion, comes from having spent three months keeping me trapped in a false reality while having 4 higher Intelligence than I did. And you definitely don't have a Keltham-comparable understanding of decision theory, and we may be playing in sudden-death mode about one wrong thought at any point destroying the multiverse."
"I could swap to Intelligence and we could argue this. No, actually, I think I swap to Wisdom and spell-buff Intelligence."
"Or we could wrap up this part and boost my stats, before using your Wishes in Hell gets too much further along a curve of increasing danger whose slope is unknown to us."