Cornugon (CR 16)

Large Outsider (Baatezu, Extraplanar, Evil, and Lawful)
Alignment: Always lawful evil
Initiative: +7 (Dex); Senses: darkvision 60 ft., Listen +22, and Spot +22
Languages: Telepathy 100 ft.

AC: 35 (-1 size, +7 Dex, +19 natural), touch 16, flat-footed 28
Hit Dice: 15d8+105 (172 hp); DR: 10/good and silver
Fort +16, Ref +16, Will +15
Speed: 20 ft., fly 50 ft. (average)
Space: 10 ft./10 ft. (20 ft. with spiked chain)
Base Attack +15; Grapple +29
Attack: Spiked chain +25 melee or claw +24 melee or tail +24 melee
Full Attack: Spiked chain +24/+20/+15 melee and bite +22 melee and tail +22 melee; or 2 claws +24 melee and bite +22 melee and tail +22 melee
Damage: Spiked chain 2d6+15 and stun; claw 2d6+10; bite 2d8+5; tail 2d6+5 plus infernal wound
Special Attacks/Actions: Spell-like abilities, fear aura, infernal wound, stun, summon baatezu
Abilities: Str 31, Dex 25, Con 25, Int 14, Wis 18, Cha 22
Special Qualities: immunity to fire and poison, acid resistance 10, cold resistance 10, see in darkness, SR 28, regeneration 5
Feats: Cleave; Improved Sunder; Iron Will; Multiattack; Power Attack; Weapon Focus (spiked chain)
Skills: Bluff +24, Climb +28, Concentration +24, Diplomacy +10, Disguise +6 (+8 acting), Hide +21, Intimidate +26, Listen +22, Move Silently +23, Search +20, Sense Motive +22, Spot +22, and Survival +4 (+6 following tracks)
Advancement: 16-20 HD (Large); 21-45 HD (Huge)
Climate/Terrain: Nine Hells of Baator
Organization: Solitary, team (2-4), or squad (6-10)
Treasure/Possessions: Standard coins, double goods and standard items

Source: Monster Manual

Spell-Like Abilities: At will - animate dead, charm person, desecrate, detect good, detect magic, detect thoughts, dispel chaos, dispel good, magic circle against good, major image, produce flame, pyrotechnics, suggestion, and teleport without error (self plus 50 pounds of objects only); 3/day - fireball and lightning bolt; 1/day - wall of fire. These abilities are as the spells cast by a 12th-level sorcerer (save DC 12 + spell level).

Fear Aura (Su): As a free action, a cornugon can create an aura of fear in a 5-foot radius. It is otherwise identical with fear cast by a 12th-level sorcerer (save DC 17) If the save is successful, that creature cannot be affected again by that cornugon's fear aura for one day. Other baatezu are immune to the aura.

Stun (Su): Whenever a cornugon hits with a whip attack, the opponent must succeed at a Fortitude save (DC 17) or be stunned for 1d4 rounds.

Wound (Su): A hit from a cornugon's tail attack causes a bleeding wound. The injured creature loses 2 additional hit points each round until the wound is bound (a DC 10 Heal check) or the creature dies.

Summon Baatezu (Sp): Once per day a cornugon can attempt to summon 2d10 lemures or 1d6 barbazu with a 50% chance of success, 1d6 hamatulas with a 35% chance of success, or another cornugon with a 20% chance of success.

Regeneration (Ex): Cornugons take normal damage from acid, and from holy and blessed weapons of at least +2 enchantment.

Immunities (Ex): Baatezu are immune to fire and poison.

Resistances (Ex): baatezu have cold and acid resistance 20.

See in Darkness (Su): All devils can see perfectly in darkness of any kind, even that created by deeper darkness spells.

Telepathy (Su): Baatezu can communicate telepathically with any creature within 100 feet that has a language.

Baatezu Subtype

Many devils belong to the race of evil outsiders known as the baatezu.

Traits: A baatezu possesses the following traits (unless otherwise noted in a creature's entry).

Extraplanar Subtype

A subtype applied to any creature when it is on a plane other than its native plane. A creature that travels the planes can gain or lose this subtype as it goes from plane to plane. This book assumes that encounters with creatures take place on the Material Plane, and every creature whose native plane is not the Material Plane has the extraplanar subtype (but would not have when on its home plane). An extraplanar creatures usually has a home plane mentioned in its description. These home planes are taken from the Great Wheel cosmology of the D&D game (see Chapter 5 of the Dungeon Master's Guide). If your campaign uses a different cosmology, you will need to assign different home planes to extraplanar creatures.

Creatures not labeled as extraplanar are natives of the Material Plane, and they gain the extraplanar subtype if they leave the Material Plane. No creature has the extraplanar subtype when it is on a transitive plane; the transitive planes in the D&D cosmology are the Astral Plane, the Ethereal Plane, and the Plane of Shadow.

Evil Subtype

A subtype usually applied only to outsiders native to the evil-aligned Outer Planes. Evil outsiders are also called fiends. Most creatures that have this subtype also have evil alignments; however, if their alignments change, they still retain the subtype. Any effect that depends on alignment affects a creature with this subtype as if the creature has an evil alignment, no matter what its alignment actually is. The creature also suffers effects according to its actual alignment. A creature with the evil subtype overcomes damage reduction as if its natural weapons and any weapons it wields were evil-aligned (see Damage Reduction).

Lawful Subtype

A subtype usually applied only to outsiders native to the lawful-aligned Outer Planes. Most creatures that have this subtype also have lawful alignments; however, if their alignments change, they still retain the subtype. Any effect that depends on alignment affects a creature with this subtype as if the creature has a lawful alignment, no matter what its alignment actually is. The creature also suffers effects according to its actual alignment. A creature with the lawful subtype overcomes damage reduction as if its natural weapons and any weapons it wields were lawful-aligned (see Damage Reduction).