Dragon Claw

Your arms become scaly and each of your hands transforms into a claw, which you can use as a natural weapon if it's empty. For the duration, you can use your spellcasting ability instead of Strength for the attack and damage rolls of melee attacks using your claws, which deals 1d6 slashing damage on a hit. The claws also are magical, for the purpose of overcoming resistance and immunity to nonmagical attacks and damage.

At 5th level, when you attack with a claw using the Attack action, you can make an additional claw attack whit your bonus action, at 11th level when you attack with a claw using the Attack action, you can make one additional claw attack as part of the same action, and at 17th level the claws deals 2d6 slashing damage.