What happens if an effect causes edge of the world to not be adjacent to the void?
The effect does not resolve. Examples:
If
you try to
move Cloud City to the only
void square adjacent to
Edge of the World, Cloud City won't move.
If you try to
play a
site from your
hand, it won't work and your site will remain in your hand.
If you use
to rearrange sites in a way that Edge of the World isn't adjacent to void, the entire rearrangement fails (and then you still try to burrow.)
If you have two Magellan Globes in play at the same
and they're the only thing keeping Edge of the World adjacent to void and they are Dispelled, one is destroyed and other isn't.