Bingo's Testicular Torsion

Unleash genital deformation upon your foes. As an action, select one target that you can see. The target must succeed on a Constitution saving throw against your spell save DC or take 4d6 force damage and be knocked prone. The target cannot stand up until it succeeds on the Constitution saving throw, repeatable every turn, and the DC decreases by 1 after every fail. On a success, the target takes half damage and remains upright.

For every level above 3rd this spell is cast, add 2d6 damage.