Your Dexterity and Charisma scores each increase by 1.

Due to their fiendish natures, succubi often tend toward evil alignments. Neutral or good succubi are extremely rare, but not unheard of. They have no particular tendency toward or against lawful or chaotic alignments.

Succubi are ageless demons, typically reaching adulthood between the ages of 15 and 19 and will not die of old age.

Succubi are shapeshifters; however, in general, they are similar in size to most other humanoid races. Your size is Medium.

Your base walking speed is 30 feet. You can also float.

Because you are a fiend, you have superior vision in dark and dim conditions. 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 gray.

Your creature type is considered to be both Fiend and Humanoid, and you are considered to have the "Shapechanger" tag. Additionally, you are vulnerable to radiant damage

As an action, you can change your appearance and your voice. You determine the specifics of the changes, including your coloration, hair length, and sex. You can also adjust your height and weight, but not so much that your size changes. You can make yourself appear as a member of another race, though none of your game statistics change. You can’t duplicate the appearance of a creature you’ve never seen, and you must adopt a form that has the same basic arrangement of limbs that you have. Your clothing and equipment aren’t changed by this trait.

You stay in the new form until you use an action to revert to your true form or until you die.

You have proficiency with the Persuasion skill.

Choose a creature you can see within 30 ft. The target must succeed on a DC 15 Wisdom saving throw or become magically charmed for 1 hour. If you use this ability while in a form the target does not find appealing (male or female), the target will have advantage on the saving throw. If the target succeeds on the saving throw or the charm wears off, the same target cannot be charmed for 24 hours. While charmed, the target cannot attack you and will obey simple commands. Any command that would harm, kill, or endanger the target will allow them to roll another saving throw. You can only have one creature charmed at a time. Charming another will end the previous target's charm.  

You can read, speak, and write Common and your choice of Abyssal or Infernal.

While in their fiend form, they can make an unarmed melee attack using their claws which deal 1d6 slashing damage.

You kiss a creature charmed by you or a willing creature. The target must make a DC  15 constitution saving throw or take 1d10 psychic damage on a failed save or half as much on a successful one. The target's hit point maximum is reduced by the number rolled and wont return until a long rest is taken. You gain hit points equal to the roll up to your max. The target dies if this reduces their hit points to 0. This damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).

You can communicate telepathically with a creature you charmed, regardless of distance. You do not need to be on the same plane of existence as the affected creature.