Bringer of Love

Adoration. At the start of each of its turns, the Bringer of Love regains 5 hit points for each creature it currently has charmed.

Devoted Fans. A creature charmed by the Bringer of Love does not end its condition upon taking damage from any source. The only way to end the effect is to succeed the save at the end of each of its turns.

Heartache. Whenever a creature that is charmed by the Bringer of Love takes damage from any source, it takes an additional 4 (1d6) Psychic damage.

Spellcasting. The Bringer of Love is a 7th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 17, +9 to hit with spell attacks), and it can cast each of these spells without material components. The Bringer of Love has following spells prepared:

1st level (4 slots): charm person, command
2nd level (3 slots): scorching ray
3rd level (3 sots): counterspell, fireball
4th level (2 slots): fire shield*, wall of fire, charm monster

*This spell is cast at the beginning of combat

 Heart Aflame. Ranged Weapon Attack: +9 to hit, range 30/60 ft., 1 target. Hit: 13 (2d6 + 6) Fire damage. A creature hit by this attack must also succeed a DC 14 Wisdom saving throw or be charmed for 1 minute. It can repeat the save at the end of each of its turns, ending the effect on a success.

Burning Passion (Recharge 6). Target: All creatures within 30 ft. Dexterity Saving Throw: DC 17. Failure: 22 (4d10) Fire damage. Success: Half damage. Failure or Success: A charmed creature is set on fire, taking 4 (1d6) Fire damage at the start of each of its turns until it uses an action to extinguish the flames.

If the Bringer of Love has at least 3 creatures charmed, the Recharge becomes 5-6.

Sultry Wink. Any spell that causes the charmed and does not inflict damage can be cast as a bonus action instead. Being in combat with the targets does not impede the spells' effects as normal. These spells include:

charm person
charm monster

For Better or For Worse. Whenever the Bringer of Love takes damage, it can use its reaction to transfer all of the damage to a creature that has been charmed. Doing so ends the charmed effect early.