Tornado of Souls

A spell of pure undead energy. Everyone other than the caster in range makes a DC 17 Wisdom saving throw. If they succeed, they take half damage. If they fail, they take 25d6 Necrotic damage and have their soul torn from their body. They lose their soul until it is dispelled or 2d4 turns pass. In this state, their body is incapacitated but have half damage dealt to them. The tornado can have 4d6 souls already inside. The souls can be used as projectiles, but if a player's soul is used, it does not hurt their body and will return to their body if they make a DC 17 Dexterity saving throw. If a soul hits a target, it deals 10d6 Necrotic damage, and the soul returns to the tornado.