Vicious Bowel-movement

You unleash a large bowel movement in a non-magical body that you touch. If the target can see you, it must succeed on a Constitution saving throw or take 2d20 physical + 2d8 acid damage. And have a disadvantage on movement and Dexterity saving throw.

This spell's damage increases by 1d20 when you reach 10th level (3d20), 15th level (4d20), and 19th level (5d20).