Sample Entropic Creatures

Entropic Ogre Mage

Large Outsider (Augmented Giant, Extraplanar)
Hit Dice: 5d8+20 (42 hp)
Initiative: +4
Speed: 40 ft. (8 squares), fly 40 ft. (good)
Armor Class: 18 (−1 size, +5 natural, +4 chain shirt), touch 9, flat-footed 18
Base Attack/Grapple: +3/+12
Attack: Greatsword +7 melee (3d6+7/19–20) or longbow +2 ranged (2d6/×3) or negative energy ray +2 ranged (1d4+4 negative energy)
Full Attack: Greatsword +7 melee (3d6+7/19–20) or longbow +2 ranged (2d6/×3)
Space/Reach: 10 ft./10 ft.
Special Attacks: Spell-like abilities
Special Qualities: Darkvision 90 ft., flight, low-light vision, negative adaptation, negative energy aura, outsider traits, regeneration 5, spell resistance 19 (20 against positive energy)
Saves: Fort +7, Ref +1, Will +3
Abilities: Str 21, Dex 10, Con 19, Int 14, Wis 14, Cha 19
Skills: Concentration +14, Listen +10, Spellcraft +10, Spot +10
Feats: Combat Expertise, Improved Initiative
Environment: Negative Energy Plane
Organization: Solitary
Challenge Rating: 10
Treasure: Double standard
Alignment: Usually lawful evil
Advancement: By character class ♊
Level Adjustment: +9

This creature looks like a big, demonic human. It has green skin, dark hair, and a pair of short ivory horns protruding from its forehead. Its eyes are dark with strikingly white pupils, and its teeth and claws are jet black.

An entropic ogre mage looks like a standard ogre mage, but is much more deadly. The negative energy powers it possesses enable it to better indulge its rapacious and cruel nature.

An entropic ogre mage is identical in measurements to its Material Plane cousin. It stands about 10 feet tall and weighs up to 700 pounds. Its skin varies in color from light green to light blue, and its hair is black or dark brown. Ogre mages favor loose, comfortable clothing and lightweight armor.

Ogre mages speak Giant and Common.

Combat

An entropic ogre mage relies on its spell-like abilities, just as a regular ogre mage does, but is more liable to resort to physical combat due to its imposing negative energy aura. Nevertheless, when faced with obviously superior forces, it prefers to retreat using gaseous form rather than fight a losing battle.

Source: Planar Handbook, page 122. Added the ogre mage’s flight to its Special Qualities entry.