Boy Band Hag

Harmonizing: If two Boy Band Hags use their Perfect Pitch feature within 60ft of each other all creatures that can hear it have disadvantage on its saving throw (including the additional saving throw of Wrong Note).

Fly By: The Harpy Hag does not provoke attacks of opportunity if it moves out of a creatures reach in its turn, provided it didn't use any of its actions other than Talons on its turn. It can use its actions normally after moving.

Magic Detection: The Boy knows the location of any magical effects within 30 feet of it.

Multi-attack. The Boy makes two attacks: either two Talons or one Poisoned Dagger and one Talon.

Talons: Melee Weapon Attack +4 to hit, 5ft reach, one target, for 1d8+1 slashing damage.

Poisoned Dagger: Melee Weapon Attack +4 to hit, 5ft reach, one target, for 1d4+1 piercing damage + 1d8 poison damage, a creature hit by this attack must succeed in a DC 14 Constitution saving throw, being poisoned until the start of the harpy hag´s next turn.

Spellcasting: The Boy Band Hag is capable to cast spells as follows.

Boy Band Hag spells have a +6 bonus to spell attack rolls and a 14 spell save DC.

Cantrips (at will): Vicious Mockery, True Strike, Thunder Clap.

Level 1 Spells (3 spell slots): Charm Person, Thunderwave, Dissonant Whispers, and Faerie Fire.

Level 2 Spells (1 spell slot): Invisibility, Deafness.

Perfect Pitch. The Boy Band Hag sings a magical melody. Every humanoid, giant and beast within 300 feet of the Boy who can hear the song must succeed on a DC 14 Wisdom saving throw suffering one of the following effects (random). Members of the band are immune to the effects.

The Boy Hag must keep singing at its following action for the effect to take place otherwise the effect of the song ends.

Paralyzing Song: Creatures become so enamored with the performance that they can not moved and are paralyzed for until the end of their next turn.

Lethargic Chorus: Creatures are bored with the band. Their speed is reduced by half and it can only take one action or one bonus action on its turn.

Wrong Note: The notes are off and disturbing. A creature his with the wrong note takes 2d8 psychic damage.  

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Maintaining Rhythm: If the Boy Band has used Perfect Pitch, they can use a bonus action to maintain the song. However, all creatures in range need to make a saving throw. Wis DC14

Fast Wings: As a reaction towards taking damage the Harpy Hag can move up to half of its flying speed without provoking attacks of opportunity.