Telepathic Bond. The fiend ignores the range restriction on its telepathy when communicating with a creature that has had sex with it and has consented to telepathic bond. The two don't even need to be on the same plane of existence.
Shapechanger. The fiend can use its action to polymorph into a Small or Medium humanoid, or back into its true form. Without wings, the fiend loses its flying speed. Other than its size and speed, its statistics are the same in each form. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.
Claw (Fiend Form Only). Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage.
vitalize (3 per day). One humanoid the fiend can see within 30 feet of it that it has had sex with has one condition removed. Expending two uses cures on level of exhaustion.
The fiend must recharge with sex to regain these uses.
Healing Kiss. The fiend kisses a creature. A creature the fiend has not had sex with regains 4d4 HP, and a creature the fiend has had sex with regains 8d4 HP. The fiend can only use this feature once per day, and must be revitalized with sex before using it again.
Healing Hug. Given to children or asexuals instead of healing kiss. If the creature considers the fiend a friend, they will be healed 8d4 HP. If the creature is neutral/hostile, they regain 4d4 HP.
Etherealness. The fiend magically enters the Ethereal Plane from the Material Plane, or vice versa.
Description
The succubus/incubus has a symbiotic relationship with stranger creatures and companions alike. In exchange for recharging the succubus/incubus with sex, the succubus/incubus radiates healing energy and vitality, in a process similar to the way humans breath in oxygen from plants and breathe out carbon dioxide, which is then used by the plants.
They are usually flirty and free-spirited, but hardly ever manipulative or conniving. They will never pressure a creature into sex, but will offer it upon first meeting, unless the creature is a child. They have no interest in being friends with children, but should a child creature be the first to put in the effort, they can slowly be brought around to caring for one. For this reason, succubi/incubi children are usually raised separate from their biological parents, unless one of the parents is a non-succubus/incubus.
The hungrier the succubus/incubus, the more restless and flirty they become. This can become annoying or a nuisance, so it is best to avoid them when they are hungry if one does not wish to feed them.
I'm so here for consensual succubi