Soul Stone

Soul Stone - legendary - Requires Attunement

Once a creature attunes to an empty Soul Stone their body goes into a magical unconscious state.

A filled Soul Stone has an AC of 20 and hit point maximum same as the first creature to attune to it, as well as immunity to non magical damage.

An empty Soul Stone has no immunity to non magical damage.

A soul inside the Soul Stone can move around freely within it’s space. A Soul Stone is a 20 feet by 20 feet by 20 feet cube. A soul can extend or shrink the space within the Soul Stone in each dimension by 5 feet permanently for every spell slot above 5th level.

If a filled Soul Stone touches a construct, the soul within the Soul Stone can choose to possess the construct. The constructs Intelligence, Wisdom, and Charisma are replaced by soul within the Soul Stone.

If a filled Soul Stone touches a creature, the soul within the Soul Stone can attempt to possess the creature on a charisma saving throw (dc equal to caster who created the Soul Stone). The possessed creatures Intellegence, Wisdom, and Charisma are replaced by the soul within the Soul Stone.

A soul inside a Soul Stone can choose which creatures can enter, non chosen creatures are incapable of teleporting inside a Soul Stone.

A soul inside a Soul Stone can return back to it’s body if it’s within 20 feet.