Fortitude +5, Reflex +9, Will +6
Acrobatics +7, Deception +6, Religion +4, Stealth +7
Darkvision
Chthonian, Protean
Precision 3, Protean Anatomy 5
Actions & Abilities
Jaws
Damage: 1d8+1 Piercing
Tail
Damage: 1d4 + 1 Slashing
Entropy Sense (Imprecise) 30 feet
A voidworm can anticipate the most likely presence of a creature through a supernatural insight into chaotic probabilities and chance. This grants them the ability to sense creatures within the listed range. prevents a creature from being detected via entropy sense automatically (without a counteract check).
Constant Spells
Fast Healing 1
Protean Anatomy 5
A voidworm's vital organs shift and change shape and position constantly. Immediately after the voidworm takes acid, electricity, or sonic damage, they gains the listed amount of resistance to that damage type. This lasts for 1 hour or until the next time the voidworm takes damage of one of the other types (in which case its resistance changes to match that type), whichever comes first.
The voidworm is immune to polymorph effects unless it is a willing target. If or , the voidworm automatically recovers at the end of its next turn as new sensory organs grow to replace the compromised ones.
Change Shape
The voidworm takes on the appearance of a Tiny animal. This doesn't change their Speed or their attack and damage bonuses with their Strikes but might change the damage type their Strikes deal.
Confounding Lash
A creature hit by the voidworm's tail Strike is Stupefied 1 for 1 round (Stupefied 2 on a critical hit). A successful save negates this effect and grants temporary immunity to confounding lash for 1 minute.
Spellcasting
DC 16
Creature Abilities
Entropy Sense (Imprecise) 30 feet. A voidworm can anticipate the most likely presence of a creature through a supernatural insight into chaotic probabilities and chance. This grants them the ability to sense creatures within the listed range. prevents a creature from being detected via entropy sense automatically (without a counteract check).
Protean Anatomy 5. A voidworm's vital organs shift and change shape and position constantly. Immediately after the voidworm takes acid, electricity, or sonic damage, they gains the listed amount of resistance to that damage type. This lasts for 1 hour or until the next time the voidworm takes damage of one of the other types (in which case its resistance changes to match that type), whichever comes first.
The voidworm is immune to polymorph effects unless it is a willing target. If or , the voidworm automatically recovers at the end of its next turn as new sensory organs grow to replace the compromised ones.
Change Shape. The voidworm takes on the appearance of a Tiny animal. This doesn't change their Speed or their attack and damage bonuses with their Strikes but might change the damage type their Strikes deal.
Confounding Lash. A creature hit by the voidworm's tail Strike is Stupefied 1 for 1 round (Stupefied 2 on a critical hit). A successful save negates this effect and grants temporary immunity to confounding lash for 1 minute.
Source, license, and attribution
Source: Pathfinder Monster Core (remaster-core-2026-08-10)
This product is licensed under the ORC License located at the Library of Congress at TX 9-307-067 and available online at various locations. All warranties are disclaimed as set forth therein. Attribution: Pathfinder Monster Core (c) 2024, Paizo Inc.; Authors: Alexander Augunas, Dennis Baker, Kate Baker, Joshua Birdsong, Joseph Blomquist, Logan Bonner, Jason Bulmahn, James Case, John Compton, Paris Crenshaw, Adam Daigle, Darrin Drader, Brian Duckwitz, Robert N. Emerson, Scott Fernandez, Eleanor Ferron, Leo Glass, Matthew Goodall, BJ Hensley, Thurston Hillman, Vanessa Hoskins, James Jacobs, Jenny Jarzabski, Miko Kallio, Jason Keeley, Jeff Lee, Lyz Liddell, Luis Loza, Ron Lundeen, Robert G. McCreary, Philippe-Antoine Menard, Jacob W. Michaels, Dave Nelson, Jason Nelson, Tim Nightengale, Stephen Radney-MacFarland, Mikhail Rekun, Patrick Renie, Alex Riggs, David N. Ross, Michael Sayre, Mark Seifter, Chris S. Sims, Amber Stewart, Jeffrey Swank, William Thompson, Jason Tondro, Clark Valentine, Landon Winkler, Tonya Woldridge, and Linda Zayas-Palmer. Adaptation: Myth Meister PF2e Remaster Compendium, 2026. If you use this Adapted Licensed Material, please credit Myth Meister. The normalized rules records and rules-reference text in the Myth Meister PF2e Remaster Compendium are Adapted Licensed Material offered under the ORC License. Reserved Material in this product includes the Myth Meister name and logos, application source code, visual design and trade dress, and original campaign content. Pathfinder, Paizo, product logos, artwork, maps, trade dress, setting lore, characters, deities, locations, organizations, events, plots, and other Paizo Reserved Material are not included. Myth Meister is not affiliated with or endorsed by Paizo Inc. Expressly Designated Licensed Material: None.