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

Incubi and Succubi reach full maturity by the age of 18. They cannot die of old age.

Incubus and Succubus often tend toward evil alignments. Neutral or good Concubi are extremely rare, but not unheard of. They have no particular tendency toward or against lawful or chaotic alignments.

Concubi are about the same size and build as humans. Your size is Medium.

Your base walking speed is 30 feet, you also have large bat-like wings, which give you a flying speed of 60 feet. You only have a flying speed of 60 feet if you are in your true form, and if you are wearing light armor tailored to your wings. If you are wearing medium armor, your flying speed is 30 feet. You cannot fly wearing heavy armor.

Thanks to your infernal heritage, 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.

You have resistance to fire and poison, but vulnerability to radiant damage.

A creature of deceptive words, Concubi have proficiency with Persuasion and Deception.

Once per-day you can give a willing creature a kiss with drains their life from them. Every long rest roll a D20 plus your Charisma modifier. If you get 14 or lower you do not regain this ability until the next long rest. Note it ability can not be turned off it is constantly active.

You can use your action to change into a medium humanoid form, or back into your true form. This form can mimic any normal humanoid, such has humans, orcs, tieflings, and elves. Without wings, you lose your flying speed. Other than your size and speed, your statistics are the same in each form. Any equipment you are wearing or carrying isn't transformed. You are considered to be a Shapechanger or a Shapeshifter for the purpose of spell effects.

If you die, your corpse reverts back to its natural form.

When in your humanoid form, you are considered humanoid; when in your true form, you are considered a fiend. Certain spells and effects that specifically deal in detection will always count you as a fiend, these include Detect Evil and Good and a Paladin's Divine Sense.

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

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

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