Stormghost

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This menacing creature stands on four pointed legs like those of an insect. A conical head sits atop its humanoid torso.

Stormghost CR 15

XP 51,200
CE Large monstrous humanoid
Init +12; Senses all-around vision, darkvision 90 ft., low-light vision, mistsight, scent, see in darkness; Perception +22
Aura static aura (5 ft., 2d6 electricity)

DEFENSE

AC 30, touch 18, flat-footed 21 (+8 Dex, +1 dodge, +12 natural, –1 size)
hp 212 (17d10+119); regeneration 5 (acid)
Fort +12, Ref +18, Will +12
Immune disease, electricity, poison; Resist cold 10, fire 10

OFFENSE

Speed 50 ft., climb 30 ft.
Melee bite +24 (1d8+8), 2 claws +24 (1d8+8/19–20 plus 1d6 electricity)
Space 10 ft.; Reach 5 ft. (10 ft. with claws)
Special Attacks impaling leap, sneak attack +3d6, static blast
Spell-Like Abilities (CL 11th; concentration +14)

At willalter winds, fog cloud, jump
3/daydeeper darkness, greater invisibility, gust of wind (DC 15), ice storm
1/daycontrol weather, plague storm (DC 19), sirocco (DC 19)

STATISTICS

Str 27, Dex 27, Con 24, Int 11, Wis 14, Cha 16
Base Atk +17; CMB +26; CMD 43 (47 vs. trip)
Feats Acrobatic Steps, Combat Reflexes, Dodge, Improved Critical (claws), Improved Initiative, Mobility, Nimble Moves, Power Attack, Spring Attack
Skills Acrobatics +22, Climb +24, Perception +22, Stealth +24 (+28 in icy or snowy areas), Survival +20; Racial Modifiers +4 Stealth in icy or snowy areas
Languages Auran
SQ adaptive camouflage

SPECIAL ABILITIES

Adaptive Camouflage (Ex)

A stormghost's hide shifts coloration over time to match its environment, granting it +4 racial bonus on Stealth checks within the ranger favored terrain type matching its current terrain. A stormghost moving to a different terrain must stay 1d4 weeks to gain the bonus.

Impaling Leap (Ex)

As a standard action, a stormghost can leap onto a target at least one size category smaller than itself and impale the victim.

The target suffers 6d8+16 points of piercing damage and is pinned (DC 26 Reflex negates). The stormghost must maintain the pin as normal. Pinned foes take impaling leap damage each round. The save DC is Dexterity-based.

Static Aura (Su)

A stormghost can surround itself with crackling electricity that leaps from its body. All creatures within 5 feet of the stormghost take 2d6 points of electricity damage at the beginning of the stormghost's turn. A stormghost can suppress or resume this ability as a free action.

Static Blast (Su)

As a standard action, a stormghost can focus its static charge into a bolt, releasing it in a 40-foot line that deals 15d6 points of electricity damage. A successful DC 25 Reflex save halves this damage. A stormghost can use its static blast once every 1d4 rounds. The save DC is Constitution-based.

Editor's Note
This creature is from another planet with seasons lasting decades, if not centuries.  Unfortunately we can't name the world due to trademark issues.  I highly recommend you pick up a copy of Distant Worlds for additional information!