As two actions, a creature that you can touch or see within 10 meters must make a Fortitude saving throw.

On a failure, the creature’s arms and legs switch places for the duration as it is unable to move unless it crawls and it has disadvantage on any attack made with a weapon. If a creature is lacking arms or legs, then any limbs used in locomotion are swapped or rotated, causing the same effect.

A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.