The Deep Ones are DP's baby, of course, but I got the sense that when it came to psionics, they were competent. It's probably not possible to easily escape through innate psionics, even if you're a Spell-to-Power Erudite who can make an infinite number of copies of yourself who can act an infinite number of times per round and who have infinite power points.
On the other hand, it's quest canon that the Deep Ones didn't stop Jeyne from getting help either. We know that escape isn't impossible. And "the Deep Ones have my soul" is less of an issue in a setting where souls can be caught, bought and sold. The technology is there, now go and find it!
I'm hoping that you suggest an interesting plan in the thread though. That's like 90% of why I post these ideas.
Best solution might just be to Mind Seed someone, burn that information from your brain directly afterward, then suicide in as permanent a manner as possible. Assuming you aren't compelled to do otherwise, of course.
It's not quite the same as surviving yourself, but it's pretty dang close.
DP is running these things on complete easy-mode though.
If you had actual, sensible compulsions against slipping your leash, you would be unable to even think about doing something that endangers you control. More then that, you would have clear and strong emotions that This Is Fine.
On the other hand, Viserys will absolutely recruit you and solve the problem for you as long as you meet him after he's saved Jeyne. Just go around being heroic with your level 20 psionics, and he'll loot you eventually. It's a fundamental law of the universe at this point
/jk
Even the very short promt mentions unusual nightmares.
It would be trivial for a level 20 Telepath to look into your own head just out of curiosity about those and from there everything else follows naturally.
If the Squids were doing good work we wouldn't start from the assumption that something is wrong.
To be entirely fair, it's entire possible that they can't suppress the nightmares fully, but that they can stop you from investigating them. Or maybe those aren't nightmares, they're just memories of the last time you escaped that they're twisting into obviously not real dream sequences?
2) You gain power in proportion to the number of successful PCs you raise into the world. Each one over 6 gets you half a level. If one gets to Level 10, you can retrain a level into a Tier 3 class. If one gets to 15, you gain a bonus feat. When one reaches 20, you gain a Mythic tier. When you reach Mythic Tier 10, every one who reaches level 20 afterward allows you to retrain up to 10 levels into a PRC as off-the-walls as ASWaH custom classes, but it has to be Mentor based. You start off at level 5 and can be any sub Tier 4 class or lower that you please. Hint: You don't have to limit yourself to people at level 1, but you have to start your idolmaster raising project with a person who does not consider themselves to be the chosen one, or even someone especially important to begin with. This is their origin story, don't fuck up their pacing!
I pick this, and go Incarnate (taking Wedded to History for eternal youth, because I'm playing the long game). Join the Scholarum (getting a job and a pile of gear instantly because I'm an exotic class that Viserys doesn't have yet), get a cushy teaching job, and simply wait.
If that doesn't work (say, because I've appeared before Viserys has started conquering places) then I'll straight-up offer to set up a school. I'm sure the Braavosi would pay good money for a training course for their guards that taught them a class as massively frontloaded as Incarnate. And Incarnate is perfect for low-level people who need to handle higher-level gribblies (tricksome Fey, weird swamp monsters, whatever)!
Conveniently, being the low-level mooks expected to handle mid-level gribblies is also a good path to levelling, which is convenient for a mentor who wants their students to level.