Bardic Harlequinn

Joyful Presence.  Any non-Fey beings that start their turn within 60 feet of the Harlequinn must make a DC 16 Wisdom saving through.  On a failed save, the being becomes charmed by the Harlequinn for 1 minute. On a successful save, the being becomes immune to any Joyful Presence for 24 hours.  Beings may repeat this saving throw whenever the Harlequin deals damaged to it.

Mental Resilience. Harlequinns are insightful beings, despite what some may think upon appearance. They have resistance to psychic damage as well advantaged against the charmed and frightened effects.

Jack of All Trades. Harlequinns are exceptional beings, and any skill they don't have proficiency in they can add half their proficiency bonus, rounded down.

Silver Tongue. They are a master at saying the right thing at the right time. When they make a Charisma (Persuasion) or Charisma  (Deception)  check, they can treat a d20 roll of 9 or lower as a 10.

Multiattack. Harlequinns make two mallet or blade attacks. They can replace one attack with a use of Spellcasting.

The Harlequinn's Mallet. Melee Weapon Attack: +6 to hit, reach 5ft., one target, two handed. Hit: 7 (1d10 + 2) bludgeoning damage, plus 22 (5d8) psychic damage.

The Harlequinn's Scimitar. Melee Weapon Attack: +6 to hit, reach 5ft., one target. Hit: 5 (1d6 + 2) bludgeoning damage, or 6 (1d8 + 2) bludgeoning damage if used with two hands, plus 22 (5d8) psychic damage.

Spellcasting. The Bardic Harlequinn casts one of the following spells using their Mallet and Charisma as the spellcasting ability (spell save DC 16). For cantrips, Harlequinns are considered to be at level 12:

at will - Blade Ward . Prestidigitation . Thunderclap . Vicious Mockery

1st level (4) - Dissonant Whispers . Hideous Laughter

2nd level (3) - Crown of Madness . Hold Person . Shatter . Warding Wind

3rd level (3) - Bestow Curse . Fear . Feign Death

4th level (3) - Compulsion . Confusion . Greater Invisibility 

5th level (2) - Mass Cure Wounds . Mislead . Seeming 

6th level (2) - Eyebite . Mass Suggestion . True Seeing

Fey Step (Recharge 4). Harlequinns can teleport, along with the equipment they are wearing or carrying, up to 30 feet into an unoccupied space they can see. Alternatively, they can touch a creature within 5 feet of them and teleport them instead.

Bardic Inspiration (Recharge 4).  Harlequinns can pick a creature other than themself within 60 feet of them who can hear them.  That creature gains one Bardic Inspiration die of a d10. Once within the next 10 minutes, the creature can roll the die and add the number rolled to one ability check, attack roll, or saving throw.

alternatively - Unsettling Words. The Harlequinn can pick a creature they can see within 60 feet of them and roll a Bardic Inspiration die (d10). The creature must subtract that number from the next saving throw it makes before the next of the Harlequinn's next turn.