Multiattack. Quill makes two attacks with his dagger and uses Supreme Mockery.

Dagger. Melee or Ranged Weapon Attack: +8 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 6 (1d4 + 4) piercing damage.

Quill's Fable (Recharge 5–6). Quill utters a short fable while targeting up to five creatures within 30 feet of him that he can see. Each target that can hear Quill's magical fable must make a DC 17 Wisdom saving throw, taking 36 (8d8) psychic damage on a failed save, or half as much damage on a successful one.

Supreme Mockery. Quill hurls a string of insults laced with enchantments at a creature he can see within 60 feet of him. If the creature can hear Quill (though it need not understand him), it must succeed on a DC 17 Wisdom saving throw or take 66 (12d10) psychic damage and have disadvantage on the next attack roll it makes before the end of its next turn.