Ooze, Gray

Transparent (Ex) A seemingly mundane puddle, patch of moist stone, or glistening rock is suddenly revealed to be more as a terrible pseudopod lashes out.

Gray Ooze CR 4

XP 1,200
N Medium ooze
hp 50 (4d8+32)
Fort +9, Ref â4, Will â4
Melee slam +6 (1d6+4 plus 1d6 acid and grab)
Base Atk +3; CMB +6 (+10 grapple); CMD 11 (can’t be tripped)
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.

Environment cold marshes and underground
Organization solitary
Treasure none

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.