Board Thread:Skyrim/@comment-11276487-20130724235013/@comment-10056803-20130725193259

Five words: Soul sharing and soul payoffs. Since the Last Dragonborn is going to be more than a random novelty soul off the street (having a dragonsoul and all), they're not just going to disregard any claims, there's probably going to be a whole lawyer-filled mess about this without either of those or everyone just throwing you at Sithis regardless of Dark Brotherhood questline. At least the Oblivion protagonist became Sheogorath, but I doubt the Dragonborn is just going to take Talos' job or anything.

If they SHARE the soul, someone (possibly Jygallag because he likely hates everything equally, and order makes for an orderly prince) will go and make a timetable, and the dovahkiin goes to each party based on the level of dedication, personal preferences of those involved, and rotates between them on a regular basis, et cetera.

If the Dragonborn PAYS OFF the soul debts, he basically just gives a metric ton of dragon souls, filled black soul gems (unless the Ideal Masters, or in the case of the Black Star, Azura AND the Ideal Masters complain until they get their way, threatening princes left and right to do so), and whatever else the daedra or void in question could ask, until he's the last soul left to pay off, and then goes to his chosen party.

This assumes a lot of side things.

A. Sithis doesn't annihilate the soul in question on death,

B. Sithis doesn't overpower everyone in question trying to take it,

C. Hermaeus Mora won't let the Dovahkiin die and so nobody can exercise said claim,

D. the Dovahkiin doesn't simply beat up everyone and everything that tries to get his soul and comes back like Potema tried to,

E. Does not become immortal via vampirism, and simply never die (though being debted to Hircine as a lycanthrope prevents this),

F. Doesn't get killed by a dovah (or in the unlikely case of the Last Dragonborn...not being the last dragonborn, another dovahkiin) and simply has their soul absorbed by a dragon that may literally have eaten them,

G. Dovahkiin are not immortal until killed by disease, injury, poison, or weapons and only age aesthetically, hardly affecting their internal processes, (Look at those Septims. Uriel was pretty athletic for old age, and Pelagius had been driven mad for years by a soulgem with a werewolf in it before dying of disease and declaring death illegal as his last act, probably not enforced as vampirism is not technically illegal, they just kill you for doing the illegal things vampires tend to do)

H. The Greybeards do not somehow know Slen Tiid Vo or whatever the resurrection shout is, and simply shout the Dragonborn immediately back to life before he can die, and possibly undo aging

I. Akatosh does not simply override everyone else's claim and grab it

J. The character isn't something COMPLETELY out of the blue absurd and incomprehensible mindscrew like an Elder Scroll in mortal form and is completely outside everyone's jurisdiction and will cause excessive Dragon Break until it is allowed to leave.