Bone Devil (Osyluth) CR 13
LE Large Outsider (Evil, Extraplanar, Lawful)Init ; Senses Listen +17, Spot +24; See in darkness
Languages Language Infernal, Celestial, and Draconic
Aura Fear (DC 20)
AC 25 (-1 size, +5 Dex, +11 natural), touch 14, flat-footed 20
hp 144 (17 HD)
Immune Fire, poison
Resist acid 10 and cold 10; SR 28
Fort +15 Ref +15 Will +14
Speed 30ft.
Melee Bite () and
Melee2 claws melee ()
Melee and sting melee ( plus poison)
Base Atk +17, Grp +26
Spell-like Abilities DC 20+ spell level, CL 20
At will—greater teleport (self plus 50 pounds of objects only), dimensional anchor, fly, invisibility (self only), major image (DC 18), wall of ice.
Abilities Str22 Dex 21 Con 22 Int 14 Wis 14 Cha 14
Feats Alertness, Cleave, Improved Initiative, Iron Will, Multiattack, Power Attack
Skills Bluff +20, Concentration +18, Diplomacy +11, Disguise +17 (+19 acting), Hide +21, Intimidate +23, Knowledge (the planes) +22, Listen +17, Move Silently +18, Search +15, Sense Motive +22, Spot +24, Survival +13 (+15 following tracks)
Combat
Bone devils hate all other creatures and attack ruthlessly. They freely use wall of ice to keep the enemy divided.A bone devil’s natural weapons, as well as any weapons it wields, are treated as evil-aligned and lawful-aligned for the purpose of overcoming damage reduction.
Fear Aura (Su)
Bone devils can radiate a 5-foot-radius fear aura as a free action. Affected creatures must succeed on a DC 17 Will save or be affected as though by a fear spell (caster level 7th). A creature that successfully saves cannot be affected again by the same bone devil’s aura for 24 hours. Other devils are immune to the aura. The save DC is Charisma-based.
Poison (Ex)
Injury, Fortitude DC 20, initial damage Str, secondary damage Str. The save DC is Constitution-based.
Spell-Like Abilities
At will—greater teleport (self plus 50 pounds of objects only), dimensional anchor, fly, invisibility (self only), major image (DC 15), wall of ice. Caster level 12th. The save DC is Charisma-based.
Summon Devil (Sp)
Once per day a bone devil can attempt to summon lemures with a 50% chance of success, or another bone devil with a 35% chance of success. This ability is the equivalent of a 4th-level spell.

