Devil, Obsidian (CR 6)
Large Outsider (Earth, Evil, and Lawful)
Alignment: Always lawful evil
Initiative: +0; Senses: Listen +10 and Spot +10
AC: 17 (-1 size, +8 natural), touch 9, flat-footed 17
Hit Dice: 10d8+20 (65 hp); DR: 10/magic
Fort +9, Ref +7, Will +9
Speed: 30 ft., burrow 30 ft.
Space: 5 ft./10 ft.
Base Attack +10; Grapple +18
Attack: 2 claws +13 melee
Damage: Claw 1d8+4
Special Attacks/Actions: Grinding grip 4d6+6, improved grab
Abilities: Str 19, Dex 10, Con 15, Int 8, Wis 11, Cha 10
Special Qualities: hellforged, outsider traits, resistances (cold 20, fire 20), SR 18
Feats: Blind-fight; Iron Will; Power Attack
Skills: Balance +10, Climb +14, Escape Artist +10, Intimidate +10, Listen +10, Move Silently +10, and Spot +10
Advancement: 11-20 HD (Large); 21-30 HD (Huge)
Climate/Terrain: Any land and underground
Organization: Solitary, pair, or squad (3-12)
Treasure/Possessions: Standard
Source:
Dragon #306
Grinding Grip (Ex): With a successful grapple check, an obsidian devil can grind its opponent against the sharp ridges and spikes of its body in a vicious bear hug, dealing 4d6+6 points of slashing damage.
Improved Grab (Ex): If an obsidian devil hits an opponent that is at least one size category smaller than itself with both of its claws, It deals normal damage and attempts to start a grapple as a free action without provoking an attack of opportunity (grapple bonus +18). If it gets a hold, it can also use its grinding grip in the same round. Alternatively, the obsidian devil has the option to conduct the grapple normally or simply use one claw to hold the opponent (-20 penalty on grapple check, but the obsidian devil is not considered grappled). In either case, each successful grapple check it makes during successive rounds automatically deals grinding grip damage.
Hellforged (Ex): Hellforged devils are immune to critical hits and are not subject to death from massive damage.
Outsider Traits: A hellforged devil has darkvision (60-foot range). It cannot be raised or resurrected.
Earth Subtype
This subtype usually is used for elementals and outsiders with a connection to the Elemental Plane of Earth. Earth creatures usually have burrow speeds, and most earth creatures can burrow through solid rock.
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).