Rifindio changed a few options in his CD, which showed a different image for Rean and the others. -Look here.-
In the image, there was a list of duties that Universe Owners had to take. One of them was related to the Great Void Shifter itself. It explained that it was the Universe Owner's duty to keep the formation in proper condition for use at all times. However, the point that caught the twins' group's attention was the next part. The truth was that you didn't just need each side of the Great Void Shifter to be activated at the same time to find the right path. To activate it, you had to contact the Werdlem Empire first and ask for permission.
Once that was done, the empire would connect to both formations, using the empire's key to unlock them. Without that key, it wouldn't matter if either Universe wanted to use the formation with or without permission. The Great Void Shifter simply wouldn't activate at all.
