Arc Lightning

You hurl an arc of lightning at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d10 Lightning damage. An enemy wearing any metal armor must make a DC 15 Constitution saving throw or have disadvantage on the next attack.

This spell's damage increases by 1d10 when you reach 5th level (2d10), 7th level (3d10), 11th level (4d10), and 17th level (5d10).