Opalescent Key

The opalescent lock's missing half. The artifact always seems to be humming at random intervals, a sound so delicate that most seem to miss it. Often worn as a necklace, it seems more like a trinket than a key that would open something, albeit it's user's perseverance and patience to find it's missing half. It shines much brighter with a positive individual who possesses a magical talent.

The key and lock and bound. Often preying on those who have an established bond whether they know or not.