Choose an ability score by 2, and another by 1.

Concubi reach full maturity by the age of 18. They cannot die of old age.

Incubi and Succubi 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. You are a fiend, and also a shapeshifter.

You have a base walking speed of 30 ft. You also have wings to fly, though you can't use this flying speed if you're wearing medium or 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 a resistance to fire, cold, or poison, but vulnerability to radiant damage.

A creature of deceptive words, Concubi have a proficiency in persuasion and deception.

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

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 and can change your size between Medium and Small. 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 an individual 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.