Dissociation

You attempt to shove the astral body of a creature out of its physical body. Make a melee spell attack against the target. On a hit, the physical body of the target becomes paralyzed while a ghostly astral body appears in the nearest open space. The target is not able to move its physical body, but has complete control over its astral body. The astral body cannot interact with any objects or creatures and can move through solid objects. On the start of each of its turns while affected by the spell, the target can make a Wisdom saving throw. On a success, the effect of the spell ceases and the target returns to its physical body. 

This spell only affects beasts, giants, humanoids, and undead.