what came first..

[Morningstar1337]

We can guess that separation of Zodiark and Hydaelyn was what allowed life to come into being and thus allowed for creation. But then you have to ask, why didn't - or couldn't - life exist before this? Could it have?

I'd imagine it would be similar to the Altana/Promanthia thing, just on a larger scale. The former using the latter to create all life.

Actually i just thought up a theory for this. Aether was contained in a large crystal. That crystal split into Hydealyn and Zodiark and contained aether broke free as a result. Would explain why aether became crystals and how the use of aether (epeicly for summoning) would drain Hydealyn