Baron Pact - Scarlet Rebuke

When you are hit by a melee attack, you can use your reaction to surround yourself in a burst of scarlet energy. The attacker must make a Dexterity saving throw (DC equal to 8 + your proficiency bonus + your Charisma modifier) or take 4d8 psychic damage. Once you use this feature, you cannot use it again until you finish a short or long rest.