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  or a +4 bonus to saving throw.

You can't use arcana deflection meanwhile this spell is active.

When a creature within 5 feet of you that you can see miss you with an attack, you can use your reaction to cause the creature to make a Dexterity saving throw. The creature takes 2d6 lightning or thunder damage (your choice) on a failed saving throw, and half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 3nd level or higher, the damage increases by 1d6 for each slot level above 2st.