Distortion

For the duration of this spell you must hold your breath, at the end of which your breath will be consumed by the spell, possibly leaving you gasping and retching. 

The very air trembles in a 20-foot radius centered on you. The area becomes difficult terrain for the duration. When a creature moves into or within the area, it takes 2d10 bludgeoning damage for every 5 feet it travels.

A DC 10 Constitution saving throw is required once the spell finishes, or you will be unable to use your Action on the next round.

Note: This spell can be maintained during a Barbarian Rage.