Originally Posted by
Hitei
This is extremely convoluted. If they keys are not the torches, the torches could be literally any five things. If they are the torches, the metaphor is obvious, the way is lit by it being unlocked, extremely simple. If they are the keepers, how are they lighting the way?
The aspects clearly aren't involved, since first, there are two and a half of them alive, not five (dead or alive). And second their Titan empowerment was consumed and subsequently destroyed in the battle against Deathwing. So they aren't even connected to the Titans anymore (and one of them isn't the dragon who was empowered by the Titans in the first place)
I could maybe buy the keeper thing, if there were five and not nine of them (Archaedas, Freya, Hodir, Thorim, Mimiron, Loken, Tyr, Ra and Odyn, or if any of them were associated with N'zoth (Six of them were directly responsible for watching over Yogg-Saron and a 7th helped defeat Yogg, why would they be the key to N'zoth's prison or the torches that light the way? And why only five of them?).
But even beyond that, why would Odyn going to Ulduar light the way for N'zoth, hundreds of miles away sealed beneath the ocean?
Because the prison was already weakening and Azshara has more potent uses for the Tidestone as a weapon. It's possible that with her level of magic and the weakness of the prison, she could have just taken the Tidestone alone and used it to break N'zoth free. It's possible she doesn't actually server N'zoth, and they are just reluctant partners in crime.
Xavius took the tear because he was attempting to just have the nightmare overwhelm the entirety of the planet, like the above example of Azshara, this was a case where he was going to win with one of the artifacts instead of needing all five and to get the Legion out of the way.