Armor Class 12
Hit Points 91 (14d8 + 28)
Speed 30 ft.
Saving Throws WIS +4, CHA +7
Skills Arcana +4, History +4
Damage Resistances psychic
Senses darkvision 60 ft., passive Perception 11
Languages any two languages, telepathy 30 ft.
Challenge 6
Whispering Aura. At the start of each of the warlock's turns, each creature of its choice within 5 feet of it must succeed on a DC 15 Wisdom saving throw or take 10 (3d6) psychic damage, provided that the warlock isn't incapacitated.
Dagger. Melee or Ranged Weapon Attack: +5 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 4 (1d4 + 2) piercing damage.
Volo's Guide to Monsters, p. 220