This creature looks like a 14-foot long cobra with a demonic humanoid head and blackish-blue scales. Two downward-curving horns jut from the sides of its head. Its tail ends in a barbed stinger. A leathery hood flares from its neck.
Nysrock Demon CR 13
AC 25, touch 11, flat-footed 23 (+2 Dex, +14 natural, –1 size)
hp 202 (15d10+120)
Fort +19, Ref +11, Will +9
DR 10/cold iron and good; Immune electricity, poison; Resist acid 10, cold 10, fire 10; SR 24
At will—greater dispel magic, greater teleport (self plus 50 pounds of objects only), unholy blight (DC 18)
3/day—blasphemy (DC 21), chaos hammer (DC 18)
1/day—summon (level 4, 2d4 babaus or 1 nysrock 35%)
Str 24, Dex 14, Con 26, Int 16, Wis 19, Cha 18
Base Atk +15; CMB +23 (+27 grapple); CMD 35 (can’t be tripped)
Feats Ability Focus (poison), Alertness, Cleave, Combat Casting, Great Fortitude, Power Attack, Weapon Focus (bite), Weapon Focus (sting)
Skills Bluff +22, Escape Artist +20, Intimidate +22, Knowledge (planes) +21, Perception +34, Sense Motive +26, Spellcraft +21, Stealth +16, Survival +22; Racial Modifiers +8 Perception
Languages Abyssal, Celestial, Common, Draconic, Infernal; telepathy 100 ft.
Sting or spit—injury or contact; save Fort DC 27; frequency 1/round for 6 rounds; effect 1d4 Con damage; cure 2 consecutive saves. The save DC is Constitution-based with a +2 bonus for the nysrock’s Ability Focus feat.
Environment any (Abyss)
Organization solitary or gang (2–4)
Nysrocks are believed to be somehow related to nagas, or are in fact nagas themselves warped through ancient and demonic dark magic into their current form. Whatever their origin, nysrocks are thoroughly evil and contemptible caring for no one other than themselves.
Nysrocks are often found in the courts of various demon lords serving as advisors and counselors. Their cunning intellects are used to full effect by their masters in weaving battle plans and plots and intrigues against rival lords and enemies.
Rumors abound as of late (supposedly from an eyewitness who lived to tell the tale) of an abyssal plane ruled by a massive nysrock at least 40 feet long. Its palace is a network of underground tunnels populated with all manner of snakes, fiendish serpents, and intelligent and cunning reptiles of all shapes and sizes.
A nysrock ranges in size from 14 to 16 feet long and weigh 350 to 450 pounds. Its scales are blackish-blue and its eyes are golden and glint with a cunning spark. Its barbed tail is jet black and oozes a vile smelling poison when the creature is threatened.
A nysrock flares its hood before it enters combat as a warning to its opponents. Those that press combat are met with a vicious bite and venomous tail sting. A creature that is bitten is grabbed and wrapped in the monster’s coils. A nysrock derives great pleasure in repeatedly stinging a grappled foe. Once a grappled foe expires, the nysrock releases its hold and consumes it whole so long as it faces no more enemies (nysrocks aren’t stupid and do not ignore other enemies in order to feed).