Crown of storm's

You create 6 Lighting bolts that make a weaving motif, circling your head resembling 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 an arc of lightning toward a single target, or multiple targets chosen within 120 feet of you. Target creature must make a Dexterity saving throw, if creature is wearing metal armor then they automatically fail saving throw. A creature takes 2d6 lightning damage on a failed save, or half as much damage on a successful one.

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