Melathyr

Multiattack. Melathyr makes two Harmonic Blade attacks and can use Luring Note once if she chooses.

Harmonic Blade. Melee Weapon Attack: +16 to hit, reach 5 ft., one target. Hit: 22 (2d8+10) slashing damage plus 18 (4d8) psychic damage as the music slices at the target's resolve.

Luring Note (Recharge 5-6). Melathyr releases a single, crystalline tone in a 60-foot cone. Each creature in the cone that can hear her must succeed on a DC 24 Wisdom saving throw or be charmed for 1 minute. While charmed in this way, a creature is incapacitated and has a speed of 0 as it is compelled to approach Melathyr and listen. A charmed creature can repeat the saving throw at the end of each of its turns, ending the effect on a success. If a creature's saving throw is successful, it is immune to Melathyr's Luring Note for 24 hours.

Domineering Verse (3/Day). Melathyr targets one creature she can see within 120 feet. The target must succeed on a DC 24 Charisma saving throw or be dominated for 1 minute (as dominate person, but Melathyr can use the target to speak or sing). The effect ends early if Melathyr is incapacitated or more than 1 mile from the target.

Wail of Unmaking (1/Day). Melathyr sings a towering, infernal chord. Each creature of her choice within 90 feet that can hear must make a DC 24 Constitution saving throw. On a failed save a creature takes 110 (20d10) psychic damage and is stunned for 1 minute. On a successful save, a creature takes half damage and isn't stunned. A stunned creature can repeat the save at the end of each of its turns, ending the stunned condition on a success.

Charm of Minor Pleasures (At-Will). Melathyr targets one creature she can see within 60 feet. The target must succeed on a DC 24 Wisdom saving throw or be charmed for 1 hour. While charmed in this way the creature regards Melathyr as a trusted ally and will defend her non-lethally; at the DM's discretion it may accept small requests. The target can be compelled to perform acts that conflict with its alignment but not acts that would cause immediate death.

Song of Deflection. When Melathyr is targeted by a magic missile spell or a ranged spell attack, she can use her reaction to sing a curt counter-melody. The melody grants her resistance to the triggering damage and grants disadvantage to the attack roll or halves the missile's damage (player's choice) if that attack would otherwise hit.