Realmwalker's Mirror

Pathway Mirror. This mirror is connected to another of the same kind. You can speak a command word to activate the mirrors. While the mirrors are active, their reflections are swapped. Each mirror shows the view from the other, even if the mirrors are on different planes of existence. You can speak the command word again to deactivate the effect and return the reflections to normal. While the mirrors are active, a creature can speak a different command word and step through the frame, appearing at the location of the other mirror. Once a creature has traveled through the mirror, they cannot use the mirrors again for 8 hours.