Name: The Leanhaun Shee
Medium fey, chaotic evil
Armor Class 15 (natural armor)
Hit Points 97 (13d8 + 39)
Speed 40 ft., fly 60 ft. (hover)

STR 8 (-1)
DEX 18 (+4)
CON 16 (+3)
INT 14 (+2)
WIS 12 (+1)
CHA 20 (+5)

Skills Deception +9, Insight +4, Perception +4, Performance +9, Persuasion +9
Damage Immunities psychic
Condition Immunities charmed, exhaustion, frightened
Senses darkvision 60 ft., passive Perception 14
Languages Common, Elvish, Sylvan
Challenge 7 (2,900 XP)

        Innate Spellcasting. The Leanhaun Shee's spellcasting ability is Charisma (spell save DC 17). The Leanhaun Shee can innately cast the following spells, requiring no material components:

        At will: charm person, dancing lights, minor illusion
        3/day each: dominate person, fear, hypnotic pattern, invisibility
        1/day: feeblemind

        Shapechanger. The Leanhaun Shee can use its action to polymorph into a Small or Medium humanoid it has seen, or back into its true form. Its statistics, other than its size, are the same in each form. Any equipment it is wearing or carrying isn't transformed.
        Life Drain. The Leanhaun Shee drains the life force of a creature charmed by it. At the start of the charmed creature's turn, it takes 10 (3d6) psychic damage, and the Leanhaun Shee regains hit points equal to the damage dealt. If this reduces the charmed creature to 0 hit points, it dies, and the Leanhaun Shee gains advantage on its next attack roll against a creature within 5 feet of the dead creature.

Actions
        Charm. The Leanhaun Shee targets one humanoid it can see within 30 feet of it. If the target can see the Leanhaun Shee, the target must succeed on a DC 17 Wisdom saving throw against this magic or be charmed by the Leanhaun Shee. The charmed creature regards the Leanhaun Shee as a trusted friend to be heeded and protected. Although the target isn't under the Leanhaun Shee's control, it takes the Leanhaun Shee's requests or actions in the most favorable way it can.
        Multiattack. The Leanhaun Shee makes two attacks with its claws or its dagger.
        Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) slashing damage.
        Dagger. Melee or Ranged Weapon Attack: +7 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 6 (1d4 + 4) piercing damage.

Description: The Leanhaun Shee is a creature from Scottish folklore that is often depicted as a beautiful woman with long, flowing hair and a hauntingly pale complexion. She is said to be tall and slender, with a lithe and graceful form that seems to float on the air.

The Leanhaun Shee is said to wear a flowing gown made of shimmering silk or gossamer, which clings to her curves and accentuates her ethereal beauty. Her eyes are deep and piercing, with a hypnotic quality that can captivate and enthrall anyone who meets her gaze.

Despite her beauty, the Leanhaun Shee is a dangerous creature. She is said to be a muse of sorts, inspiring artists and poets with her otherworldly charm and beauty. However, anyone who falls under her spell is said to be doomed to a life of obsession and madness, as she drains their life force and leaves them with nothing but their artistic talents.

Some versions of the legend say that the Leanhaun Shee has wings, which she uses to fly through the night sky and visit her chosen victims. Others say that she is a shape-shifter, able to take on any form she desires in order to lure her prey closer.

Overall, the Leanhaun Shee is a hauntingly beautiful and dangerous creature that has captured the imaginations of storytellers for generations.