Torque Testicles

You perform a grasping and twisting motion with a free had toward one creature within range. This creature must succeed on a intelligence saving throw as it starts to believe it is experiencing testicular torsion. On a failed save, a creature takes 6d8 Psychic damage and falls prone. On a successful save, a creature takes half as much damage and doesn't fall prone. This spell has no effect if cast on a creature that doesn't have testicles (female body, does not sexually reproduce, etc.).

At Higher Levels:  When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.