Umbral Bolt

You conjure a bolt of shadow energy and hurl it at a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 3d8 necrotic damage, and it must make a Constitution saving throw or be afflicted with dimness. A creature afflicted with dimness has a disadvantage on Wisdom (Perception) checks that rely on sight, and it sheds dim light in a 5-foot radius.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 for each slot level above 2nd.