Elemental Chaos

Both your hands are enveloped in either electricity, fire or ice. Make a melee spell attack against the target. On a hit, the target takes 1d8 lightning, fire or cold damage and the element disappears from that hand. As a bonus action, if you miss, or on your next turn you can use the other hand to to make another melee spell attack against a target; on a hit the target takes 1d6 lightning, fire or cold damage.

The spell's damage increases by 1d8 and 1d6 when you reach 5th level (2d8, 2d6), 11th level (3d8, 3d6), and 17th level (4d8, 4d6).