Voloshaft's Veil

Your dealings with nefarious beings has given you insight on how to protect yourself from both them, and others who wish to harm you.

You touch a willing creature who isn't wearing armor, and a protective magical force surrounds it. Until the spell ends, the target's base AC becomes 13+ its Intelligence modifier. The target additionally gains a +2 to saving throws and Charisma (Persuasion) checks when interacting with Demons, Fiends and Abyssal creatures. If the target is attacked by a Demon, Fiend, or Abyssal creature, the target can use its reaction to focus the veil's strength and rebound the blow forcing the attacking creature to make a Wisdom saving throw using the target's spell DC . On a fail, the attacking creature takes 3d10 force damage and is stunned until the end of its next turn. On a success, the creature takes half damage and is not stunned. Only one instance of this spell can be cast per individual at a time.

When casting this spell at a higher level the damage increases by 1d10. The duration of the spell also doubles in length up to a maximum of 12 hours. (4d10 and 3 hours at 5th level, 5d10 6 hours at 6th level, 6d10 and 12 at 7th level).