You gain proficiency in Charisma (Intimidation). If you are to gain proficiency in this skill again, from another source, you can instead gain expertise with this skill. In addition, whenever your presence becomes known to a creature, you must compare your passive Charisma (Intimidation) score with the creature’s passive Wisdom (Insight) score. If your score is higher, the creature becomes frightened. When a creature is frightened this way, you can decide to make a Charisma (Persuasion) check, the DC being your Charisma (Intimidation) check, to end this effect on the creature. A creature who has spent more than 1 minute in your presence can no longer be frightened this way.

You Charisma score increases by 2.

You have resistance to fire damage.

When you make a melee attack, you may use your Charisma modifier in place of your Strength or Dexterity modifier.

You can speak, read, and write Common and Infernal.

Erinyes are quite a unique existence among mortals. Beings devils, they usually are not permitted to die unless told to by their masters. However, Erinyes that have escaped from hell and have become independent do exist, however rare. As such, they typically live around a thousand years after they escape from the Nine Hells.

Erinyes take pride in their names. The love for them to strike fear into whomever hears them. Because of this, they almost always contain hard consonant sounds, with several syllables. However, for some odd reason, they will not use the letter C unless used immediately before H to form a “Ch” sound. They also will pronounce every letter of their name. They do not believe in silent letters.

You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of grey.

Hell lives in infamy for its rigid and corrupt politics. It’s citizens reflect that. Erinyes lean very strongly towards the lawful and evil alignments.

You know the Green Flame Blade cantrip. When you reach 3rd level, you can cast Hex once using this trait, and regain the ability to do so after you finish a long rest. Charisma is your spellcasting ability for these spells.