Barrow Chorister
Threat: EXTREME
Status: UNKNOWN
Abilities
Slam: two melee attacks, each +5 to hit, 1d8 + 3 bludgeoning damage.
Lullaby (recharge 5-6): every creature within 30 feet that can hear it makes a DC 13 Wisdom save or falls magically asleep (the Unconscious condition) for 1 minute, waking if it takes damage or someone uses an action to shake it.
The verse: it sings the first line of the barrow-verse to anyone who approaches the door. A creature that answers with the rest of the verse is let in, with its companions.
Keeper of the peace: it never attacks an Unconscious creature, whether asleep or struck down. It sings over them until they wake, then asks for the verse again.
Immune to poison and psychic damage; cannot be charmed, frightened or poisoned.
Weaknesses
Fired clay: vulnerable to thunder damage.
Elves, who cannot be magically put to sleep, are unaffected by its lullaby.