Dead Weight

Calling forth a restless spirit from beyond the grave, you direct it to subdue a creature you can see within range. The target must make a Strength saving throw. On a failed save, its movement speed is halved as the spirit begins to weigh them down. On a successful save, the creature isn't affected. A creature whose movement speed has been halved by this spell must make another Strength saving throw at the end of each of its turns. For each failed save, the spirit weighs them down further; first it becomes grappled, then prone, then incapacitated. On a successful save, the spell immediately ends.

The spell can also end early if protection from evil and good or dispel evil and good is cast on the target.