You have Advantage on Saving Throws against disease, as well as Resistance to Necrotic Damage.

You have disadvantage on attack rolls and on Wisdom (Perception) checks that rely on sight when you, the target of your attack, or whatever you are trying to perceive is in direct sunlight.

You know the Minor Illusion cantrip. When you reach 3rd level, you can cast the Charm Person spell once per long rest. When you reach 5th level you can cast Misty Step once per long rest. Charisma is your spellcasting ability for these spells.

Your fangs are natural weapons, which you can use to make unarmed strikes against incapacitated or grapple creatures. If you hit them, you deal 1 point of piercing damage instead of the bludgeoning damage normal for an unarmed strike. If the being contains blood, and is not a construct or undead, you add your charisma modifier to the damage (min 1) and regain one spent hit die. You can use this trait once at 1st level and gain an additional use at 5th, 9th, and 15th for a total of 4 uses.

When you drain blood with Dark Thirst, you experience a surge of vitality. Your speed increases  by 10 feet, and you gain advantage on Strength and Dexterity checks and saving throws for 1 minute.

Thanks to your cursed heritage, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet as if it were bright light, and in darkness as if it were dim light. Shades of gray.

Due to your unnatural charisma, you are proficient in Persuasion.

Your Charisma score increases by 2 and your Dexterity score increases by 1