[@A Lowly Wretch]

Perhaps? But the idea is that they're not lost. At least, not to him. The world may very well forget it, but they're preserved in his realm, along with all the knowledge therein. Though, I suppose it is similar on some level in regards to mortals, at least. I always did intend for him to take knowledge as much as give it, just for giggles to see what humans of different Eras or locations do with the same knowledge after some time of it having been deemed a lost art or some such.

Like say...for example, White Dawn attempts doing something extremely dangerous. They blow themselves up. Iva uses the ability, transfers the city, their results, people, everything that's left to his realm as a way of saying 'this is as far as they go.' Later on...possibly someone else attempts the same thing. Iva could very well help them and let them have access to the preserved places if he thinks they earned the right, simply curious to see what the outcome of it would be that time.

Anyways, enough of my late night rambling, hah. Another question.

Could a god alter their own Divine Cords? Say, not to give them any new domains or anything, but experiment on themselves or another to perhaps fundamentally change their existence, or otherwise alter them in some way? Or would that be a no?