Fortitude +36, Reflex +25, Will +27
Athletics +38
Darkvision, Tremorsense 100 feet Imprecise
Fire
Cold 15
Actions & Abilities
Jaws
Damage: 3d10+18 Piercing, 2d6 Fire
Stinger
Damage: 2d12+18 Piercing, 2d6 Fire
Body
Damage: 2d10+16 Bludgeoning, 2d6 Fire
Tremorsense (Imprecise) 100 feet
Fire Healing
As long as a magma worm is in contact with a fire or body of magma at least as large as itself, it gains fast healing 20. When struck by a magical fire effect from anything other than itself, a magma worm regains Hit Points equal to half the fire damage the effect would otherwise deal.
Inexorable
The magma worm recovers from the , , and conditions at the end of its turn. It's also immune to penalties to its Speeds and the condition, and it ignores difficult terrain and greater difficult terrain.
Slough Skin
Frequency once per day
Trigger The magma worm would be affected by a condition or adverse effect (such as )
Effect The magma 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.
Fast Swallow
Trigger The worm Grabs a creature
Effect The worm uses Swallow Whole.
Fire Breath
The magma worm breathes a blast of flame in a that deals 18d6[fire|options:area-damage] damage to all creatures in the area ( save).
It can't use Fire Breath again for {1d4 rounds}.
Magma Worm Venom
Saving Throw
Maximum Duration 6 rounds
Stage 1 1d6[poison] damage and Drained 1 (1 round)
Stage 2 2d6[poison] damage and drained 1 (1 round)
Stage 3 2d6[poison] damage and Drained 2 (1 round).
Rock Tunneler
A magma 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
Huge, (3d10+10)[bludgeoning,2d6[fire]], Rupture 36
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
Creature Abilities
Fire Healing. As long as a magma worm is in contact with a fire or body of magma at least as large as itself, it gains fast healing 20. When struck by a magical fire effect from anything other than itself, a magma worm regains Hit Points equal to half the fire damage the effect would otherwise deal.
Inexorable. The magma worm recovers from the , , and conditions at the end of its turn. It's also immune to penalties to its Speeds and the condition, and it ignores difficult terrain and greater difficult terrain.
Slough Skin. Frequency once per day
Trigger The magma worm would be affected by a condition or adverse effect (such as )
Effect The magma 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.
Fast Swallow. Trigger The worm Grabs a creature
Effect The worm uses Swallow Whole.
Fire Breath. The magma worm breathes a blast of flame in a that deals 18d6[fire|options:area-damage] damage to all creatures in the area ( save).
It can't use Fire Breath again for {1d4 rounds}.
Magma Worm Venom. Saving Throw
Maximum Duration 6 rounds
Stage 1 1d6[poison] damage and Drained 1 (1 round)
Stage 2 2d6[poison] damage and drained 1 (1 round)
Stage 3 2d6[poison] damage and Drained 2 (1 round).
Rock Tunneler. A magma 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. Huge, (3d10+10)[bludgeoning,2d6[fire]], Rupture 36
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.
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.