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Cave Worm

Creature 13 — animal

The most common and infamous of the cave worms gives its name to the entire family—a much-feared monster wandering the twisting tunnels of the Darklands that is capable of carving out entire cave systems. Tunnels bored by a cave worm don't always last long after these creature's passage, and areas where they nest are maddening mazes of passageways that lead nowhere, yet navigating the labyrinth to find the worm's central nest often yields amazing treasures left behind by the worm's prior victims

Source: pathfinder-monster-core

Perception +20
Skills athletics +30
Str
+9
Dex
-1
Con
+7
Int
-5
Wis
-1
Cha
-1
AC 32 Fort +28 Ref +21 Will +21
HP 270
Speed 40 feet, burrow 40 feet, swim 20 feet

Offense

Melee Jaws +28, Damage 3d10+15 piercing
Melee Stinger +28, Damage 2d12+15 piercing
Melee Body +26, Damage 1d10+13 bludgeoning
Ranged Regurgitate +26, Damage 1d4 bludgeoning

Abilities

Tremorsense (Imprecise) 100 feet — Tremorsense
Inexorable — The cave worm recovers from the Paralyzed, Slowed, and Stunned conditions at the end of its turn. It's also immune to penalties to its Speeds and the Immobilized condition, and it ignores difficult terrain and greater difficult terrain.
Slough Skin — Frequency once per day Trigger The cave worm would be affected by a condition or adverse effect (such as Cursed Metamorphosis) Effect The cave worm negates the triggering condition or effect by sloughing an outer layer of its skin. Effects from artifacts, deities, or a similarly powerful source can't be avoided in this way.
Cave Worm Venom (poison) — Saving Throw DC 32 Fortitude Maximum Duration 6 rounds Stage 1 5d6 poison damage and Enfeebled 2 (1 round) Stage 2 6d6 poison damage, and enfeebled 2 (1 round) Stage 3 8d6 poison damage and enfeebled 2 (1 round)
Fast Swallow
Regurgitate — The purple worm can violently regurgitate a creature or boulder it has swallowed to make a ranged Strike. The Strike deals bludgeoning damage depending on the size of the projectile: Tiny 2d6+13 bludgeoning{2d6+13} Small 3d6+13 bludgeoning{3d6+13} Medium 4d6+13 bludgeoning{4d6+13} Large 5d6+13 bludgeoning{5d6+13} Huge 6d6+13 bludgeoning{6d6+13} A regurgitated creature takes falling damage from the height of the target or from 20 feet, whichever is greater. Boulders occupy space in the worm's stomach as a creature of equivalent size, and purple worms often have several boulders swallowed. A purple worm can use a single action to swallow a new boulder.
Rock Tunneler — A cave worm can burrow through solid stone at a Speed of 20 feet. It can leave a tunnel if it desires, and it usually does.
Swallow Whole (attack) — Huge, 3d6+9 bludgeoning, Rupture 24 Swallow Whole
Thrash — The worm makes a Strike once against each creature in its reach. It can Strike up to once with its jaws, up to once with its stinger, and any number of times with its body. Each attack counts toward the worm's multiple attack penalty, but the multiple attack penalty doesn't increase until after it makes all the attacks.
Improved Grab — Improved Grab

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