It can be activated by saying the name of the dragon that you want to see, then by breathing smoke onto it. The dragons appear as colored tendrils of smoke, making vision unclear, but voices and background noises can be heard perfectly clear. In order to end the connection one must breathe fire over the surface of it, so this makes it impossible for IceWings, RainWings, or SeaWings to use the mirror, as they cannot breathe smoke or fire.