Deep Magic Volume 2 (p.231)
Trade Corporeality
4-level Transmutation
Casting Time: 1 action
Range/Area: 60ft.
Components: Verbal, Somatic, Material
Materials: a ghost's tooth
Duration: Concentration, 1 minute
Attack/Save: CON Save
Damage/Effect: Control
A ghostly creature you can see within range becomes solid and more lifelike. If the target doesn’t have the Incorporeal Movement trait, the spell fails.
The target must succeed on a Constitution saving throw or become corporeal as you become incorporeal. For the duration, the target loses its Incorporeal Movement trait and any resistances it has to acid, cold, fire, lightning, and thunder damage as well as any resistances it has to bludgeoning, piercing, and slashing damage from nonmagical attacks. Until the spell ends, you gain the Incorporeal Movement trait and the resistances the target lost.
Available for: Sorcerer, Wizard