Crown of the Storm Tyrant

You create six bolts of lightning that encircle the caster's head like a crown. When you cast the spell - and as a bonus action on each of your turns thereafter - you can expend one or two of the bolts, sending it streaking towards a point or points within 120 feet of you. Once a bolt reaches its destination or impacts against a solid target, it explodes.  Each creature within 5 feet of the point where the bolt explodes must make a Dexterity saving throw. A creature takes 2D6 lightning damage on a failed save, or half that on a success.

At Higher Levels: when you cast this spell using a slot of 4th level or above, the number of lightning bolts increases by two for each level above 3rd

Note: This spell is a homebrew version of Melf's Minute Meteors, and you should check with your DM before using it