Blast of Pain

A ray of smokey grey light streaks toward a creature of your choice within range. Make a ranged spell attack against the target. On a hit, the target takes 4d6 necrotic damage, and the target must make a Constitution saving throw against your Spell Save DC. On a success, the next attack roll made by this target before the end of their next turn has disadvantage, as crackling, withering pain afflicts them. On a failure, the target is stunned until the end of its next turn or until it next takes damage, as unbearable pain wracks them both physically and mentally.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.