Bone Devil
Large fiend, lawful evil
Armor Class 16 (natural armor)
Hit Points 161 (17d10 + 68)
Speed 40 ft., fly 40 ft., swim 20 ft., climb 20 ft.
str
18 (+4)
dex
16 (+3)
con
18 (+4)
int
13 (+1)
wis
14 (+2)
cha
16 (+3)
Saving Throws Str +8, Int +5, Wis +6, Cha +7
Skills Deception +7, Insight +6
Damage Resistances cold
Damage Immunities fire, poison
Condition Immunities poisoned
Senses darkvision 120 ft., passive Perception 12
Languages Infernal; telepathy 120 ft.
Challenge 9 (5,000 XP)
Diabolical Restoration. If the devil dies outside the Nine Hells, its body disappears in sulfurous smoke, and it gains a new body instantly, reviving with all its Hit Points somewhere in the Nine Hells.
Magic Resistance. The devil has Advantage on saving throws against spells and other magical effects.
Actions
Claw. Melee Attack Roll: +8, reach 10 ft. 13 (2d8 + 4) Slashing damage.
Infernal Sting. Melee Attack Roll: +8, reach 10 ft. 15 (2d10 + 4) Piercing damage plus 18 (4d8) Poison damage, and the target has the Poisoned condition until the start of the devil's next turn. While Poisoned, the target can't regain Hit Points.
Multiattack. The devil makes two Claw attacks and one Infernal Sting attack.