Bowels of Chaos

You target one creature you can see within range. You unleash a surge of arcane intestinal mischief, warping the target's bowels with magical glee. The creature must succeed on a Constitution Saving Throw or double over in uncontrollable spasms as their body betrays them in the most humiliating way possible. They fall prone, becoming incapacitated, and suffer an "embarrassing" discharge. 

At the end of each of its turns, and each time it takes damage, the target can make another Constitution Saving Throw. On a success, the effect ends, though the emotional scars remain.

When cast at 2nd level, the stench becomes too much to handle for those nearby. Creatures within 5 feet of the target have disadvantage on attack rolls as they cover their noses and mouths. For every level above 2nd, add another 5 feet to the radius.