Mirrors of Teleportation

A pair of oval mirrors, roughly 3 feet in height and 2 feet in width, with ornate brass frames. The mirrors are magically linked together and operate as long as they are within 500 feet of each other.
A creature who touches the glass surface of a mirror must make a DC 15 CON save or be pulled into the mirror, instantly emerging through the other into the nearest unoccupied space. A willing creature can allow themselves to be teleported without needing to make a saving throw.