Bray Mothers Sight. Magical darkness doesn't impede the devil's darkvision.
Magic Resistance. The Bray Mother has advantage on saving throws against spells and other magical effects.
Multiattack. The Bray Mother makes three melee attacks: two with its fork and one with its tail. It can use Hurl Flame in place of any melee attack.
Fork. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 15 (2d8 + 6) piercing damage.
Tail. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 10 (1d8 + 6) piercing damage. If the target is a creature other than an undead or a construct, it must succeed on a DC 17 Constitution saving throw or lose 10 (3d6) hit points at the start of each of its turns. A player can succeed on a DC 15 Constitution Saving Throw or continue taking damage at the start of their turns.
Spit Flame. Ranged Spell Attack: +6 to hit, range 60 ft., one target. Hit: 14 (4d6) fire damage. If the target is a flammable object that isn't being worn or carried, it also catches fire.