Thunder skin deflection

You have learned to weave your magic to fortify yourself and to thunderously rebuke attackers

Your arcane deflection becomes permanent for one minute and you gain +2 bonus to your AC. You can't reuse this feature again meanwhile this spell is active.

When a creature within 5 feet of you that you can see miss or hit you with an attack, you can use your reaction to cause the creature to make a Dexterity saving throw. The creature takes 2d8 lightning or thunder damage (your choice) on a failed saving throw, and half as much damage on a successful one.

When this spell ends, you can’t cast spells other than cantrips until the end of your next turn.