HP 148 (17d10) AC 18 SPD 20 ft., fly 60 ft.

Senses

Darkvision 120 ft., passive perception 13

Languages

Infernal, telepathy 120 ft.

Damage Resistances

cold; bludgeoning, piercing, and slashing from nonmagical weapons that aren't silvered

Damage Immunities

fire, poison

Condition Immunities

poisoned

Devil's Sight

Magical darkness doesn't impede the devil's darkvision.

Magic Resistance

The devil has advantage on saving throws against spells and other magical effects.

Multiattack

The devil 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 due to an infernal wound. Each time the devil hits the wounded target with this attack, the damage dealt by the wound increases by 10 (3d6). Any creature can take an action to stanch the wound with a successful DC 12 Wisdom (Medicine) check. The wound also closes if the target receives magical healing.

Hurl Flame

Ranged Spell Attack: +7 to hit, range 150 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.