Edge of the World

In this rare case, Edge of the World would destroy itself.

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.