rare n medium acid mindless ooze 

Perception +26; motion sense [object Object] feet, no vision

Skills Athletics +35, Stealth +30 (+34 in acidic surroundings)

Str +5 Dex +9 Con +6 Int -5 Wis +0 Cha -5

Motion Sense A crawling slurry can sense nearby motion through vibration and air movement.

AC  30; Fort +28, Ref +31, Will +20

HP 300; Immunities acid, critical hits, mental, poison, precision, unconscious, visual

Splatter [R] Trigger The crawling slurry takes bludgeoning damage from a creature it can sense within 10 feet; Effect The crawling slurry ejects a splash of acid onto the creature, dealing acid damage equal to the bludgeoning damage dealt to the crawling slurry (DC 37 basic Reflex).

Speed 30 feet, climb 20 feet

Melee [>] pseudopod +32, Damage 3d10+11 bludgeoning plus 2d8 acid and Grab

Constrict [>] 2d10+3 bludgeoning plus 2d8 acid, DC 37

Crawling Slurry Acid A crawling slurry's acid damages metals and organic materials but not stone.

Engulf [>>] DC 37, 5d10 acid, Escape DC 37, Rupture 20. A crawling slurry regains 30 Hit Points if a living creature it is engulfing dies.

Strength of Thousands #6: Shadows of the Ancients, page 82.