Spellcasting. The Yoebelitz Brood Mother is a 1st-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 14, +6 to hit with spell attacks). The Brood Mother has following spells prepared: 

Cantrips (at will): infestation, poison spray. 
1st level (3 slots): dissonant whispers, ray of sickness

Action Melee Attack. Melee Weapon Attack: +6 to hit, reach 5 ft., 1 target. Hit: 5 (2d6 - 1) slashing damage.

Horrific Scream. The Brood Mother screams from both heads, amplifying the sound. All creatures within 30ft must make a DC14 Wisdom Saving Throw or become frightened of the Brood Mother.