This spell functions as mirror hideaway, except any creature that enters the target mirror can spend a swift action to exit through another mirror within 500 feet as if using dimension door; this is a one-way transport. The creature can exit through a mirror only if it could fit through an opening the same size as the mirror. Each transport through the target mirror reduces the spell’s duration by 1 hour.
Pathfinder Roleplaying Game Advanced Class Guide © 2014, Paizo Inc.; Authors: Dennis Baker, Ross Byers, Jesse Benner, Savannah Broadway, Jason Bulmahn, Jim Groves, Tim Hitchcock, Tracy Hurley, Jonathan H. Keith, Will McCardell, Dale C. McCoy, Jr., Tom Phillips, Stephen Radney-MacFarland, Thomas M. Reid, Sean K Reynolds, Tork Shaw, Owen K.C. Stephens, and Russ Taylor.