Exorcism

You send a wave of death energy that wraps around the target and momentarily forces their soul out of their body. A living creature within range must succeed a Charisma saving throw or have their body drop to the ground, incapacitated, until the end of their next turn. Their soul visibly hangs in the air above the body. The soul is targetable, with an AC of 10+Dex, speed of 0, and shares hit points with the body. The soul can not take any actions, but is able to speak. The soul is immune to non-magical damage. Area-of-effect spells and abilities only affect the creature once.

If the soul doesn't belong to the body, it is immediately banished and any spells maintaining the possession are ended.

At the end of the target's next turn, their soul immediately returns to their body and they regain consciousness if they have hit points remaining.