Agony

You cause one creature that you can see within range to writhe in agony. The target must make a Constitution saving throw. On a failed save, the target takes 2d6 necrotic damage, and it has disadvantage on the next weapon attack roll it makes before the end of your next turn. Half damage on save and no disadvantage.

The spell’s damage increases by 1d6 when you reach 3rd level (3d6), 5th level (4d6), and 7th level (5d6).