Bacchae

Debauch. If a willing or tricked target accepts the offer to join the group of bacchae they must make a wisdom save or slowly unless prevented via the greater restoration spell they will slowly turn into a bacchae in the next day (24 hours). Once this process is complete the target can only be cured via the wish spell. 

Magic Resistance. The bacchae has advantage on saving throws against spells and other magical effects.

Immutable Form. The bacchae is immune to any spell or effect that would alter its form.

Rage. When the bacchae is not happy or in combat they can use their bonus action to rage as if they where a level 10 barbarian. 

Innate Spellcasting. The bacchae's innate spellcasting ability is Charisma (Dc 10, +2). It can innately cast the following spells, requiring no material components:

At will: charm person, tasha's hideous laughter 

1/day: friends 

Multi attack. The bacchae makes two claw attacks and if both attacks hit the same target the bacchae deals an extra  5 (2d4 +1) slashing damage or if the bacchae is raging it deals an extra 8 (2d4 +4) slashing damage instead. 

Claw. Melee Weapon Attack: +3 to hit, reach 5 ft., 1 target. Hit: 5 (2d4 + 1) slashing damage or if the bacchae is raging it deals 8 (2d4 +4) slashing damage instead. 

Rock. RangedWeapon Attack: +3 to hit, range 10/30 ft., 1 target. Hit: 4 (1d6 + 1) bludgeoning damage.