Quote Originally Posted by TankHunter678 View Post
Except there was nothing to stop the original cause of the calamity from happening again. The very foundations of reality was breaking down, and that is not a natural occurrence unless something was damaging reality all this time. Which there was only one possible cause in that regard: The very creation magics they relied on and constantly used every day of their life by potentially billions of people.

Which would mean that while Zodiark used the vast amounts of creation magic he was summoned with to repair reality, if they continued to have him use creation magic on that scale then the calamity would repeat itself in short order. Faster with all the people brought back using their creation magic all the time as they tried to rebuild their lives. Leading to them again having to sacrifice half their population to repair the reality they were actively accidentally destroying ad creating a cycle of sacrifice until their souls were so degraded that it makes Hydaelyn splitting everyone the far more merciful and future granting method.
That's a complete speculation on a lot of people's part that their use of creation magic caused the sound. We have no proof of that.