Quote Originally Posted by Lyth View Post
You can't time travel if you're dead. That's why you can't take it as a given that the Elpis time loop always existed. There is no time loop in the Eighth Umbral Era timeline because Azem is dead.
This is irrelevant if there is only one Unsundered Etheirys. Only a WoL from one of the branching timelines has to travel back in time for both branches to be affected by it, because both branches are the same timeline prior to the moment they split.