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Ooze, Magma

Large ooze, unaligned

Armor Class 7
Hit Points 85 (9d10 + 36)
Speed 20 ft., climb 20 ft.

16 (+3) 4 (–3) 18 (+4) 1 (–5) 6 (–2) 1 (–5)

Damage Immunities acid, cold, fire, lightning, poison, psychic, slashing
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 8
Challenge 6 (2,300 XP)

Special Traits

  • Amorphous. The magma ooze can move through a space as narrow as 1 inch wide without squeezing.
  • Superheated. Creatures that touch the magma ooze take 7 (2d6) fire damage. Any nonmagical weapon used to attack the magma ooze melts and warps. After dealing damage, the weapon takes a permanent and cumulative –1 penalty to damage rolls. If its penalty drops to –5, the weapon is destroyed. Nonmagical ammunition that hits the ooze is destroyed after dealing damage. The ooze can melt through 2-inch-thick, nonmagical wood or metal in 1 round.
  • Spider Climb. The magma ooze can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.


  • Pseudopod. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 13 (3d6 + 3) bludgeoning damage plus 28 (8d6) fire damage. In addition, any nonmagical armor worn by the target is partially burned and melted and takes a permanent and cumulative –1 penalty to the AC it offers. The armor is destroyed if the penalty reduces its AC to 10.


  • Split. When a magma ooze that is Medium or larger is subjected to slashing damage, it splits into two new magma oozes if it has at least 10 hit points. Each new magma ooze has hit points equal to half the original ooze’s, rounded down. New oozes are one size smaller than the original magma ooze.


This creature appears to be a pool of bubbling and churning molten rock.

A magma ooze is encountered primarily on the Material Plane but is thought to have its origins on the Plane of Fire. They are almost always found in or near volcanoes and other warm or hot places. Magma oozes do not approach water and are never found near such sources. Magma oozes can grow to a length of 10 feet, with a thickness of about 6 inches.

Section 15: Copyright Notice

Tome of Horrors © 2018, Frog God Games, LLC; Authors: Kevin Baase, Erica Balsley, John “Pexx” Barnhouse, Christopher Bishop, Casey Christofferson, Jim Collura, Andrea Costantini, Jayson ‘Rocky’ Gardner, Zach Glazar, Meghan Greene, Scott Greene, Lance Hawvermale, Travis Hawvermale, Ian S. Johnston, Bill Kenower, Patrick Lawinger, Rhiannon Louve, Ian McGarty, Edwin Nagy, James Patterson, Nathan Paul, Patrick N. Pilgrim, Clark Peterson, Anthony Pryor, Greg Ragland, Robert Schwalb, G. Scott Swift, Greg A. Vaughan, and Bill Webb