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Hollow Serpent

This creature looks like an oversized, empty snakeskin, its body covered in barbs and maw filled with jagged teeth.

Hollow Serpent CR 16

XP 76,800
NE Large undead
Init +9; Senses darkvision 60 ft., lifesense; Perception +17
Aura desiccation aura (30 ft., DC 16)


AC 31, touch 19, flat-footed 21 (+9 Dex, +1 dodge, +12 natural, -1 size)
hp 230 (20d8+140); fast healing 10
Fort +14, Ref +17, Will +18
Defensive Abilities channel resistance +4, freedom of movement; DR 10/magic and silver; Immune undead traits; SR 27


Speed 50 ft., climb 50 ft.
Melee 2 bites +23 (4d10+10 plus grab)
Space 10 ft.; Reach 10 ft.
Special Attacks channel negative energy (8d6, DC 24,
9/day), constrict (4d10+10 plus energy drain), energy drain (1 level, DC 26), life-draining coils
Spell-Like Abilities (CL 16th; concentration +22)

Constantfreedom of movement
1/dayhorrid wilting (DC 24), waves of exhaustion


Str 25, Dex 29, Con —, Int 6, Wis 19, Cha 22
Base Atk +15; CMB +25 (+29 grapple); CMD 43 (can't be tripped)
Feats Agile Maneuvers, Channel Smite, Dodge, Great Fortitude, Iron Will, Lightning Reflexes, Lunge, Toughness, Vital Strike, Weapon Finesse
Skills Climb +28, Escape Artist +19, Perception +17, Stealth +18
Languages Aklo; telepathy 100 ft.
SQ swift strike


Channel Negative Energy (Su)

As a standard action, a hollow serpent can channel negative energy in a 30-foot burst as a 16th-level evil cleric. This ability requires no divine focus. The save DC is Charisma-based.

Desiccation Aura (Su)

A cloud of moisture-draining dust fills the air in a 30-foot radius around a hollow serpent. Living creatures within this area must make a DC 26 Fortitude save or take 1d6 points of Strength damage as water is leached from their flesh. Whether or not the save is successful, a creature cannot be affected again by the same hollow serpent's desiccation aura for 24 hours. Creatures without fleshy bodies are immune to this aura, while creatures with the aquatic or water subtypes take a -4 penalty on the saving throw. The save DC is Constitution-based.

Life-Draining Coils (Su)

A hollow serpent seethes with negative energy capable of sapping the life force of creatures trapped within its coils. Every time a creature takes constriction damage from a hollow serpent, it gains one negative level. The hollow serpent also gains 5 temporary hit points for each negative level it bestows.

Lifesense (Su)

A hollow serpent notices and locates living creatures within 60 feet, just as if it possessed the blindsight ability.

Swift Strike (Ex)

When a hollow serpent takes a full-attack action, it can make two bite attacks instead of just one.