Stygian linnorm

Stygian linnorms were a rare and dangerous species of linnorm native to the River Styx.

Description
Stygian linnorms were massive, serpentine dragons without wings or hindlegs, with a pair of horns curling off of the crocodilian head. Their scales various shades of gray. The claws of the front legs, the only limbs linnorms had, were webbed.

Personality
Stygian linnorms were avaricious, cruel, and arrogant.

Abilities
Stygian linnorms had very keen eyesight in addition to both darkvision and blindsight. They were immune to magic that induced sleep or paralysis, damage caused by acid, and anything that effected the mind; they were naturally immune to the forgetfulness effects of the River Styx. Stygian linnorms were also venomous, and their breath weapon was simply- and horrifyingly- a cone of acid and Styx water that both damaged and potentially feebleminded enemies.

Additionally, Stygian linnorms had several spell-like abilities, able to cast fly and control water at will; dimension door, quickened enervation, feeblemind, and destruction each three times per day.

Combat
Stygian linnorms preferred to open combat by using enervation on the most obviously dangerous enemy, immediately followed by either their breath weapon (if against a group) or destruction (if against a single foe). They then go into melee, saving their spell-like abilities for enemies mobile enough to stay out of reach. Stygian linnorms only fought to the death when protecting their treasure, otherwise, they fled using dimension door if severely injured.

Ecology
Stygian linnorms were native to and almost never found outside of the River Styx. They were generally solitary, although mated pairs and family groups of up to six were not unknown. They were also known ally with other powerful entities, acting as guardians, although even then they were near-impossible to control.

Stygian linnorms living away from the Styx enjoyed convincing lesser species, particularly ogres and trolls, that they are deities who deserved tribute.

Iggwilv was known to keep a pair of enthralled Stygian linnorms as guardians of her manor in Hades.