The Fae turned pale and cast a protective charm on himself. "We know that spell as well, but it has other uses. It puts a portion of the world into a time loop. You can use it to test strategies or find cures for diseases because every time that the spell loops, everything is reset back to the way it was when you arrived.
Nobody dies, no time passes in their minds, and even the food they ate returns to them. Anything that is taken out will reappear, but the spell takes an immense amount of power. As in, two Demon Kings working together, or a massive group ritual that has to be ongoing for the duration of the spell."
"Wait, you say that it normally is cast on a specific area, as in a spot in your world. The way the Demons described the ones in their Realms sounded like they were a separate space entirely." Wolfe asked.