Could Jagar Tharn be the result of a multi-generational plan that involves conscious and perhaps forced cross-breeding?
Clues.
1: Symmachus called him 'part Dunmer, part Altmer and part who knows what. Said to be born to a Bosmer woman'. Well, he didn't say it literally that way perhaps, but he did say it. In 'The Real Barenziah'. Ok, so that's Dunmer, Altmer and Bosmer, three different races. Oh, and the potential for another race 'X'.
2:Tharnie wasn't just any Dunmer. He was descended from some sort of royal Dunmer family or somesuch. In any case, according to Symmachus (again), only people of that line could open the seal on the Staff of Chaos. Cross-breeding between commoners is all fine and dandy, but nobles don't do that stuff without a very good reason. Politics and marriage go hand-in-hand. And you don't really need a political marriage when the Altmer live on a bunch of islands on the other end of the continent. And a political marriage with a Bosmer? Oh c'mon, as if a Dunmer noble would ever even bring it up in the form of a joke. One of those cannibalistic, backward, stupid, treehuggers married to a Dunmer of the finest blood? No way! (Note: I love Bosmer, just giving the Dunmer view on them.)
3: Altmer and Dunmer nobles. Something tells me that at least these two would preferably avoid any cross-breeding, politics or not. I mean, Dunmer (especially nobles) tend to be traditional and 'Outlander=N'Wah'. Altmer...well, they're Altmer. I think that's pretty obvious. I don't know about the Bosmer view on cross-breeding but it should be obvious by now, that Tharn's multi-racial blood is very unlikely to have occured through mere coincidence.
4: Apart from having multiple races in his make-up, including some noble, Tharn is also a mage of phenomenal power. Get this, he conjured enough Daedra (Well, Arena mentions Demons, but I think that Demons became Daedra later on) to replace a large portion of the palace guard. Now going through reasonable estimates, I'd say it's probably at least a couple of dozen. And we're not just talking short-term conjuration, but long-term which I think is a lot harder.
The lower limit is a few hours. Tharnie could easily rotate demons that are off-shift with new ones cause after all, if he can shapeshift one, he can shapeshift another to look exactly the same. (doesn't help, cause the new guy would still be draining his Magicka) The upper limit is the entire period where he was in control.
In-game, summoning for more than a minute or two is pretty hard even with just one Daedra. This could be chalked up to game balancing and have the in-universe time limit extended to like twenty minutes, but that still pales in comparison to what Tharn did. Unless he bound them to an object through enchantment. Possible, but still pretty high level.
Oh, and after the conjuration, we get the illusion. That was pretty badass and good enough to fool just about everyone. Once again, long-term and apparently good enough to fool Uriel's wife (I'm going off on a wild guess and assume that the royal couple slept in the same room, in the same bed), so I guess he only removed it while on the toilet and stuff. (Yeah yeah, Barenziah suddenly went with the whole: "But I'm a mage myself, so I looked right through cause any mage can look through it and I'm that awesome and all praise the queen!" But seriously, do you think that everyone at the bloody Arcane University is a freaking amateur? They freaking live in the same bloody city, you can't tell me not a single mage from there ever paid a visit to the palace.)
5: Since Tharn is so powerful yet no one had really heard of him before he became Battlemage, he didn't have that much access to good learning facilities. So it is possible that most of it was more raw Magicka burning rather than refined skill, though I bet he refined it a bit over the years and became more efficient. So his Magicka pool (considering everything he had running all at once) must have been enormous, even by Altmeri standards. How do you get that if you're just a normal person?
Conclusion: Tharn has a mixture of blood that is at least highly unusual and otherwise really convenient (Staff of Chaos), he had insane powers and all, so I think that he was not just a natural at it. He was a deliberately bred natural. Considering the rumours of the Altmer 'blood-purity', combined with their resentment over being governed by 'one of the lesser races', I point the tall goldskins as the culprit. Somewhere, there might have been an Altmer who decided that blood-purity meant "returning to the original Aldmer blood by reuniting all the current forms of mer. Oh, and let's topple the Empire with totally badass skills and an unattainable artefact of immense power while we're at it. That will teach them a lesson."
PS: As I said, totally ridiculous. But I just couldn't miss the opportunity to throw my madness onto the boards.
