Curse of Pain

You unleash a malevolent curse upon a creature that you can see within range, causing excruciating pain to wrack its body.

The target must make a Constitution saving throw. On a failed save, it takes 4d8 necrotic damage and becomes incapacitated as the intense pain overwhelms its senses. The target is also granted disadvantage on attack rolls, ability checks, and saving throws until the curse is dispelled. On a successful save, it takes half as much damage and does not become incapacitated, though it still suffers from the other effects.

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.