Alfred's slimy Meteors

You create eight slimy meteors that orbit around your body for the spells duration. When you cast the spell — and as a bonus action on each of your turns thereafter — you can expend one or two of the meteors, sending them streaking toward a point or points you choose within 30 feet of you. Once a meteor reaches its destination or impacts against a solid surface, the meteor explodes. Each creature within 5 feet of the point where the meteor explodes must make a Dexterity saving throw. A creature takes 3d4 acid damage on a failed save, or half as much damage on a successful one.

As an action you can combine three or four of the meteors to strike a point you choose within 30 feet of you. Each creature within 15 feet of the point where the meteor explodes must make a Dexterity saving throw. A creature takes up to 12d4 acid damage and is knocked prone on a failed save or half as much damage and is not knocked prone on a successful one. After you use this feature make a Concentration Check against your Spell Save DC. If you fail you are stunned until the end of your next round.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the number of meteors created increases by two for each slot level above 3rd.