Electro Bolt

You fire a bolt of electricity at a creature within range. Make a ranged spell attack roll against the target. A target takes 1d6 lightning damage upon a hit. The attack roll has advantage if the target is wearing metal armor. If the target is hit while within water, it and all creatures within the same body of water take an additional 1d4 lightning damage.

This damage increases by 1d6 and 1d4 at 5th level (2d6 and 2d4), 11th level (3d6 and 3d4), and 17th level (4d6 and 4d4).