Fiendish Skin

The Fiendish blood in your veins has given you additional defensives against the outside world. Whether this manifests as scales, plates, or just thicker skin is up to you. Gain +2 to your armor class even while wearing armor.

Once per long rest you may use your reaction draw upon the power of your ancestors and gain resistance to one type of damage (except psychic) until the end of your next turn.