Quote Originally Posted by Veloran View Post
Yeah, okay, but that doesn't at all explain how that happens in Othard in the world of XIV, because all of that lays completely outside of the established lore.
It's not meant to. It's meant to explain why the Japanese creators of the game didn't see any point in explaining them at all.

Consider ghosts, which are an actual enemy in the game. From what we know of the Lifestream, they shouldn't exist - when things die, their souls return to the Lifestream, are broken up, and return as new souls for newly born creatures. So where do ghosts fit into this, when ghosts are, in theory, the lost souls of the dead? We can come up with our own theories, but the game never really explains. It's just assumed that ghosts exist because this is a fantasy game which draws upon a smorgasbord of fantasy tropes. By the same token, auspices exist in the game because they, too, are a fantasy trope (and, naturally, they were introduced in the same expansion which introduced Eastern fantasy tropes). Because this trope is one unfamiliar to folks outside of the Far East, we're naturally curious about it and would like a more in-depth explanation - but as far as the Japanese are concerned, they are a completely ordinary fantasy phenomenon, and there's no more need to explain these guys than there is to explain ghosts.

It's not a satisfying answer, I know, for folks who want to dig into the lore, but I doubt the game is going to put any further effort into explaining how Auspices exist than they already have.