Torturous Trauma

With this spell created by a long forgotten sadistic torturer, you batter a creature's internal organs, leaving no external signs of the immense pain you delivered. The target must make a Constitution Save. If they fail, the target takes bludgeoning damage equal to 1d4 + your spellcasting modifier, and gains a level of Exhaustion until the start of your next turn. Creatures that lack internal organs are unaffected by this spell. A creature reduced to 0 hit points by this spell is knocked unconscious rather than killed.

This spell's damage increases by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).