N Medium ooze
Init –5; Senses blindsight 60 ft.; Perception –5
AC 5, touch 5, flat-footed 5 (–5 Dex)
hp 50 (4d8 + 32)
Fort + 9, Ref – 4, Will – 4
Defensive Abilities ooze traits; Immune cold, fire
Speed 10 ft.
Melee slam + 6 (1d6 + 4 plus 1d6 acid and grab)
Special Attacks acid, constrict (1d6+1 plus 1d6 acid)
Str 16, Dex 1, Con 26, Int —, Wis 1, Cha 1
Base Atk + 3; CMB + 6 (+ 10 grapple); CMD 11 (can’t be tripped)
Environment cold marshes and underground
Acid (Ex) The digestive acid that covers a gray ooze dissolves metals and organic material, but not stone. Each slam and constrict attack deals 1d6 additional acid damage. Armor or clothing worn by a creature grappled by a gray ooze takes the same amount of acid damage unless the wearer succeeds on a DC 20 Reflex saving throw. A wooden or metal weapon that strikes a gray ooze takes 1d6 acid damage unless the weapon’s wielder succeeds on a DC 20 Reflex save. The ooze’s touch deals 12 points of acid damage per round to wooden or metal objects, but the ooze must remain in contact with the material for 1 full round in order to deal this damage. The save DCs are Constitution-based.
Transparent (Ex) Due to its lack of vivid coloration, a gray ooze is difficult to discern from its surroundings in most environments. A DC 15 Perception check is required to notice the gray ooze. Any creature that fails to notice a gray ooze and walks into it automatically suffers damage as if struck by the ooze’s slam attack and is immediately subject to a grab attempt by the ooze.
Slinking their way through cold swamps and bleary marshlands, or sometimes even dungeons and caverns, gray oozes consume any organic materials they encounter. Despite its lack of intelligence, the gray ooze is a most problematic creature due to its transparency. While the ooze cannot easily climb walls or swim, its habit of lurking in the thick mud that lines the banks of marsh pools or lying in harmless-looking pools on dull-colored dungeon floors makes it dangerously easy to overlook and step on.
Some sages believe that the gray ooze is the result of a failed alchemical experiment, while others postulate that the first gray oozes spontaneously arose from a cesspit of magical detritus. Of course, these theories that gray oozes are not living organisms, but rather the alchemical result of an unfortunate mixture of rare caustic fluids and magical waste, are derided by many who dwell in areas plagued by the creatures but which do not have a long history of magical pollution.