Arc Lightning

A powerful arc of lightning shoots from your palm hitting and spreading to your enemies. Make a ranged spell attack against the target. On a hit, it takes 1d6 lightning damage. You roll with advantage if the target is wearing armor made of metal.

In addition if there are any creatures within 30ft of the target you can make an additional attack immediately. The lightning jumps up to two times dealing an additional 1d4 lightning damage to each target.

The spell's damage increases by 1d6 and 1d4 damage die each when you reach 5th level (2d6 and 2d4), 11th level (3d6 and 3d4), and 17th level (4d6 and 4d4)