Your bonus ability score for Dexterity and Charisma is 2

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

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. (Speak with your DM). 

Medium

Your base walking speed is 30 feet.

Charm: One humanoid the fiend can see within 30 feet of it must succeed on a DC 15 Wisdom saving throw or be magically charmed for 1 day. The charmed target obeys the fiend’s verbal or telepathic commands. If the target suffers any harm or receives a suicidal command, it can repeat the saving throw, ending the effect on a success. If the target successfully saves against the effect, or if the effect on it ends, the target is immune to this fiend’s Charm for the next 24 hours.
The fiend can have only one target charmed at a time. If it charms another, the effect on the previous target ends.

Draining Kiss: The fiend kisses a creature charmed by it or a willing creature. The target must make a Constitution saving throw against this magic, taking 1d10 + your spellcasting modifier psychic damage on a failed save. The target’s hit point maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.

The damage of Draining Kiss increases by 1d10 when you reach 5th(2d10), 9th(3d10), 13th(4d10), 17(5d10)th level.

You may cast this spell as a ritual. Your target must remain within 10 feet of you for the entire ritual. At the end of the ritual, the target is drained of all of their life essence. They die and you consume their soul. This may garner some benefits (at the consultation of the DM).

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 polymorph into any humanoid of your size that you have seen or back into your true form. However, your equipment does not change with you. You lose the fly speed granted by your Wings of the Hellspawn trait if your current form does not have wings. If you die, you revert to your natural appearance.

You have proficiency with the Persuasion skill and Deception skill.

You gain Resistance to all Nonmagical weapons and basic elements as well.

Your max flying speed is 60 feet. This speed reduces to 30 feet when wearing medium armor, speed is reduced to 25 feet when wearing heavy armor. Additionally, your wings cannot be used unless your armor or clothing has been modified to account for them. Any armor or clothing you start with is already modified, and you may use 5g worth of tailor’s equipment to modify any normal clothing when resting in town. Armor must either be taken to a Smith for modification or modified using Smith’s Tools.

You have advantage on intimidation checks with your wings visible

The Succubus magically enters the Ethereal Plane from the Material Plane or vice versa. Once you leave the Ethereal Plane and arrive in the Material Plane you are under the influence of the Slow Spell and must make a Wisdom saving throw if you fail, roll 1d6 for rounds of the Slow effect, on a successful saving throw it only lasts 1 round and negates the disadvantage on perception checks.

The fiend ignores the range restriction on its telepathy when communicating with a creature it has charmed. The two don’t even need to be on the same plane of existence.

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

Innate Telepathy 60ft.

Add this number to the player's current level to determine the challenge rating.

As a succubus, you need to consume "Essence" to survive the material plane.

Gathering Methods

• Directly through intercourse
• Indirectly through sample
• Bought from certain vendors (Talk with DM about possibilities)

Penalty: Must consume "Essence" within 10 days, 3 times per month or add 1 level of exhaustion per missed.

Optional Addictions

Can be found in Homebrew Feats

1. Demonic Inbreeding
2. Draconic Meal
3. Necrotic Essence Absorption