Armor Class 15 (natural armor)
Hit Points 38 (7d8 + 7)
Speed 20 ft.
Damage Immunities poison
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned
Senses darkvision 60 ft., passive Perception 7
Languages understands Dwarvish but can't speak
Challenge 3
Multiattack. The screamer makes one Drill attack, and it uses Sonic Scream.
Drill. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 (1d12 + 4) piercing damage.
Sonic Scream. The screamer emits destructive energy in a 15-foot cube. Each creature in that area must succeed on a DC 11 Strength saving throw or take 7 (2d6) thunder damage and be knocked prone.
Engine of Pain. Immediately after a creature within 5 feet of the screamer hits it with an attack roll, the screamer makes a Drill attack against that creature.
Mordenkainen Presents: Monsters of the Multiverse, p. 111