Galvanic Scales

When you roll lightning damage for a spell you cast, you can reroll any roll of 1 on the lightning damage dice, but you must use the new roll, even if it is another 1.

Whenever you cast a spell that deals lightning damage, you can cause electricity to wreathe you until the end of your next turn. The static doesn't harm you or your possessions, and it sheds bright light out to 15 feet and dim light for an additional 15 feet. While the sparks are present, any creature within 5 feet of you that hits you with a melee attack takes 1d4 lightning damage.