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Ooze, Metallic

Large ooze, unaligned

Armor Class 9 (natural armor)
Hit Points 95 (10d10 + 40)
Speed 20 ft., climb 10 ft.

17 (+3) 5 (-3) 19 (+4) 2 (-4) 6 (-2) 1 (-5)

Skills Stealth +3
Damage Immunities acid
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 8
Challenge 5 (1,800 XP)

Special Traits

  • False Appearance. The metallic ooze is indistinguishable from a pile of coins as long as it remains motionless.
  • Irritating Fumes. If a metallic ooze takes fire damage, it emanates a cloud of semi-transparent vapor that irritates the eyes and respiratory system of living creatures within 10 feet of it. All creatures other than undead or constructs within the area must succeed on a DC 15 Constitution saving throw or take 10 (3d6) acid damage and be poisoned for 1 minute. A poisoned creature can repeat the saving throw at the end of each of its turns, ending the effect on a success. The cloud disperses in 1 minute, or can be dispersed by a moderate or greater wind.
  • Spider Climb. The metallic ooze can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.


  • Slam. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) bludgeoning damage plus 18 (4d8) acid damage, and the target must succeed on a DC 15 Constitution saving throw or be poisoned for 1 hour.


A large pile of seemingly unguarded coins lies before you.

A metallic ooze appears as a 9-foot blob of protoplasm of varying hue and color, and come in a variety of sizes and colors: gold, silver, platinum, copper, brass, or bronze. Regardless of the color or size, metallic oozes resemble large piles of coins. The oozes use their appearance to lure would-be treasure hunters to their doom. Because of this, they are sometimes referred to as hoard oozes. Its form is coarse and rough giving it the appearance of piles of coins. A metallic ooze can flatten its body in order to squeeze through spaces and cracks where it normally could not go.

A metallic ooze can be found virtually anywhere, though it tends to inhabit dungeons, ruined temples, castles, and other buildings where treasure seekers seem to enjoy perfecting their craft. From a distance of 30 feet or more, a metallic ooze resembles a pile of loose coins (of whatever type its coloration most closely resembles). A creature can attempt a DC 20 Perception check to notice the ooze for what it is. This monster does not collect treasure, but the remnants of living creatures that meet their demise at the hands of this creature are often found scattered about its lair.

A metallic ooze lies still until it detects a potential meal within range. It then forms a pseudopod and pummels the opponent. Creatures killed by a metallic ooze are devoured. While a metallic ooze can cling to walls and ceilings (and often does drop on unsuspecting prey), it prefers to wander dungeon corridors and such on the ground, often waiting in one spot until living prey wanders too close.

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