Aura Sphere

You channel your energy from within to create an orb of iridescent light.  You can hurl the orb at a creature you can see within 60 feet of you.  As the orb is hurled towards the point, it's radius increases to 15 feet.  Make a ranged spell attack at the target creature.  On a hit, the creature takes 8d6 force damage.  Any creatures within the 15-foot radius that you did not target must succeed on a Dexterity saving throw against your spell save DC or take the same damage as the original targeted creature.  On a successful save, those creatures take half as much damage.  The original target creature is exempt from the Dexterity saving throw.

At Higher Levels.  The damage increases by 1d6 when aura sphere is cast using a spell slot that is 5th level or higher.