Transference Mirror

This ancient mirror binds itself to the one that uses it, though the binding can be broken and reestablished in a small amount of time. It always reflects its current master, but not necessarily that master's true health. The original reflection is always healthy and free of injury, but when the magic is invoked, the master and the mirror reflect one another and take on each other's state whatever that may be at the time. This magic may be invoked a limited number of times each day. 10x/day (Dorian Gray mirror)

References: https://gswiki.play.net/Great_Auction_of_2016