Lightning Dancer

You use lightning not just for attacking but also for defense. You gain the following benefits:

• If you cast a spell that deals lightning damage on your turn, you can use a bonus action to spend a sorcery point. When you do so, add your proficiency bonus to your AC until the start of your next turn.
• If you are subjected to an effect that allows you to make a Dexterity saving throw to take only half damage from lightning, you can use your reaction to redirect some of the damage. 
  Reduce the damage by 1d12 per half your level, you can send that damage up to 120ft to a target of your choice. That target must make a Dexterity saving throw or take the damage, the target takes half damage on a success.