Tempest Bolt

Lightning shoots from your hand to deliver a bolt of energy to a creature within 60ft. Make a Ranged spell attack against the target. You have advantage on the attack roll if the target is wearing any non magical armour made of metal. On a hit, the target takes 1d6 lightning damage, and it can't take reactions until the start of its next turn.

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