A Contest of Nisse and Release
Crystal cage is the size of a small birdcage or a large lantern.
When in 3 feet of a dying Celestial Exalted it will trap the essence of the individual.
It is also thought to be able to capture the essence of Fair Folk if they are destroyed near it.
Speculation is that the item is able to hold multiple individual essences.
This is one of 5 prototypes that were created prior to the Jade Prison.
To release of a soul inside the holder of the cage must call the name of the person trapped inside. The prepwork is pretty simple – Runes traced on the ground, special incense and having an Essence over 3. Intelligence + Lore with 5 successes.