Soul Exchange

8th-level necromancy

Casting Time: 1 minute

Range: Touch

Components: V, S, M (a jeweled silver rod worth at least 5,000 gp)

Duration: Until dispelled

You attempt to swap souls with a humanoid you touch during the entire casting time. The target must succeed on a Charisma saving throw or its soul and yours exchange bodies. A creature that cannot be possessed is immune, and a creature that succeeds on the saving throw can’t be targeted again for 24 hours. If your soul moves into the target’s body, your body falls into a catatonic state as the target’s soul moves within. The target’s soul is trapped in your comatose body.

Once you possess a creature’s body, you control it. You use the Strength, Dexterity, and Constitution of your new body, as well as its natural attacks, weapon attacks, and other physical attributes. You do not gain its racial traits or its class features. However, you retain your alignment and your Intelligence, Wisdom, and Charisma scores. You keep your level and its benefits, including hit points and Hit Dice, and you still have your own class features.

While possessing a body, you can use your action to return from the host body to yours if it is on the same plane as you, returning the host creature’s soul to its body at the same time.

If the host body dies while you’re in it, the host creature dies, and you must make a Charisma saving throw against your spellcasting DC. On a success, you return to your body if it is alive and on the same plane as you. Otherwise, you die.

If your body dies while you possess the host body, this spell ends, but your soul remains within the host body. You take a -5 penalty to all attack rolls, saving throws, and ability checks. Every time you finish a long rest, this penalty is reduced by 1 until it disappears.