Captain Ei

Indomitable. Ei has 2 legendary resistances.

Harpy's Song. Ei must remain singing for the duration of combat, while doing so her movement speed is reduced to 10ft. Her spells range and size are doubled and she ignores verbal and touch requirements of spells. She als summons the Endless Waltz to her side to take action. When Ei takes damage she must make a concentration saving throw or have her spellcasting and features be interrupted until she uses an action on the next round to activate them again. 

Spell Recall. Whenever Ei casts a spell with a level 1–4 spell slot, roll 1d4. If the number you roll is the same as the slot’s level, the slot isn’t expended.

Metamagic. Ei has access to the following metamagic options and has 20 sorcery points.

• Empowered Spell.
• Extended Spell.
• Heightened Spell
• Quickened Spell
• Seeking Spell
• Subtle Spell
• Twinned Spel

Fungal Will. When Ei is reduced to 0 hit points, she can make a Charisma saving throw (DC equal to the damage taken). On a success, she instead drops to 1 hit point. She can't use this feature if she is reduced to 0 hit points by radiant damage or by a critical hit. After 1 round she is restored to half hitpoints and gains the following benefits: 

• She gains 25 temporary hit points.
• Once during each of her turns, when she damages a creature, she can force it to make a Wisdom saving throw, and if the saving throw fails, the target is frightened of her  until the end of her next turn.

Spellcasting. Ei is a 10th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 18, +10 to hit with spell attacks). Ei has following sorcerer spells prepared:
Cantrips (at will): Vicious Mockery, Chill Touch, Friends, Minor Illusion
1st level (6 slots): Shield, Silvery Barbs, Dissonant Whispers, Charm Person, Command
2nd level (6 slots): Suggestion, Shadow Blade, Mind Spike, Hold Person, Gift of Gab
3rd level (5 slots): Slow, Major Image, Hypnotic Pattern, Fear, Counterspell, Shatter
4th level (4 slots): Confusion, Greater Invisibility, Staggering Smite, Phantasmal Killer
5th level (3 slots): Synaptic Static, Wall of Light, Enervation, Dominate Person, Cone of Cold

Danse Macabre. Ei's song compells a target to find the nearest person they can to waltz with them. The person makes a Wisdom saving throw against her spellcasting DC or spend their turn moving towards their closest ally and dancing with them, wasting their turn too. 

Spell Attack. Ei casts a spell.

Endless Waltz. The Waltz is a spectral humanoid creature that is summoned to Ei's side at the start of combat and shares her initiative, going right after her. The Waltz has an AC of 14 and 30 hitpoints. It has a flying speed of 40ft. When it is killed it is immediately resummoned at Ei's side as long as her Harpy's Song trait is active. The Waltz chooses a target and hunts this down. The Waltz uses Shadow Blade for its attacks and shares the same stats and attack bonuses as Ei does.

• It can move through other creatures and objects as if they were difficult terrain. The Waltz takes 5 force damage if it ends its turn inside an object.
• At the start of its turn, the Waltz automatically knows its target's location. If the target was hidden, it is no longer hidden from the hound.

The Waltz can make opportunity attacks, but only against its target. Additionally, while the waltz is within 5 feet of the target, the target has disadvantage on saving throws against any spell you cast. If the target is reduced to 0 hitpoints, or when commanded, the Waltz switches targets, until dismissed. 

Stagecraft. Ei can move inbetween shadows as if they were gateways formed by the Gate spell and can similarly use this to manipulate objects around the room. She can use her bonus action to move herself from one shadow to another within 120ft. 

Bend Luck (3/day). In response to another creature that Ei can see making an attack roll, ability check, or saving throw, she can roll 1d8 and apply the number rolled as a bonus or penalty to the creature's roll. She can do so after the creature rolls but before any effects of the roll occur.

Ei can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. Ei regains spent legendary actions at the start of its turn

Dress Change. (Costs 1 Actions ). Roll 1d8, Ei's AC increases by this amount until the end of the round. Can only be used once per round. 

Take Direction! (Costs 1 Actions). If a targeted creature does not play along with Ei's performance, quips or interactions (such as improv) Ei can instill a penalty onto them, choosing from the list below:

• Monologue: The creature must monologue during its turn if able, rending it unable to use verbal components. 
• Crowd's Dismay: A spectral crowd appears and Boos the creature, giving it disadvantage on attacks and saves until the end of its turn.
• Rotten Tomatoes: The audience throws spectral tomatoes at the creature, dealing 2d4 psychic damage. 
• Change your Stride: The creatures movement speed is halved until the end of its turn. 
• Funny Accent: The Player cant communicate with other players until the end of their next turn unless they use a ridiculous accent. 
• Tragic Backstory: The creature must reveal a secret about themselves or suffer 5d6 psychic damage. 
• The spotlight is on You!: The targeted creature is blinded and cannot deal sneak attack damage.

Encore! (Costs 2 Actions ). Ei uses the Danse Macabre feature again if it failed at the start of this turn. 

Command Adranach. (Costs 3 Actions)  Ei can dole out a command for the Adranach to follow to the best of it's ability.