Constellation Flash

You create a tracing of tiny motes of light to create the rough image of a humanoid, creature or object in the air that burst into a bright flash of light.  Each creature of your choice in a 5-foot cube must make a Constitution saving throw or take 1d6 radiant damage and is blinded for 1 minute.  On a successful save, it takes half as much damage and isn’t blinded by this spell.

A creature blinded by this spell makes another Constitution saving throw at the end of each of its turns. On a successful save, it is no longer blinded.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 and the cube increases by 5 feet for each slot level above 1st.