Armor Class 11
Hit Points 49 (11d8)
Speed 30 ft.
Saving Throws WIS +3, CHA +6
Skills Arcana +2, Deception +6, Nature +2, Persuasion +6
Condition Immunities charmed
Senses passive Perception 11
Languages any two languages (usually Sylvan)
Challenge 4
Dagger. Melee or Ranged Weapon Attack: +3 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 4 (1d4 + 2) piercing damage.
Misty Escape (Recharges after a Short or Long Rest). In response to taking damage, the warlock turns invisible and teleports up to 60 feet to an unoccupied space it can see. It remains invisible until the start of its next turn or until it attacks, makes a damage roll, or casts a spell.
Volo's Guide to Monsters, p. 219