Cloud Burst

You create a burst of electrical arcs centered on yourself. Each creature within range, other than you, must succeed on a Dexterity saving throw or take 1d6 Lightning damage.

creatures wearing metal armor make the save with disadvantage.

The spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).