Umbral Ray

A frigid beam of void-black darkness streaks toward a creature within range. Make a ranged spell attack against the target. On a hit, it takes 1d8 psychic damage, and the target must make an intelligence saving throw. On a failed save, the target has disadvantage on the next attack roll it makes before the end of its next turn. The spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).