Cosmic Ray

You fire a thin beam of starlight at a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 3d8 radiant damage and must succeed on a Constitution saving throw or be blinded until the start of your next turn. Creatures that are invisible or in magical darkness take an additional 1d8 radiant damage on a hit.

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.