uncommon n medium mindless ooze 

Perception +11; chemical sense 60 feet, no vision

Skills Athletics +19

Str +6 Dex -3 Con +5 Int -5 Wis +0 Cha -5

Chemical Sense A fuming sludge detects nearby living and undead creatures by their complex chemical compositions, but it can't detect elementals or other creatures composed of a single element.

Smoldering Haze (aura, fire) 15 feet. The fuming sludge constantly emits incendiary smoke that creates concealment around it. The smoke doesn't impair the fuming sludge's chemical sense. A creature that enters the aura or begins its turn in the aura becomes sickened 1 (DC 25 Fortitude negates) and cannot recover from persistent fire damage for 1 round. It is then temporarily immune to the sickening effect of the smoldering haze for 1 minute. A creature that is currently holding its breath, that doesn't need to breathe, or that's immune to poison is immune to the aura's sickened effect but not the concealment or inability to recover from persistent fire damage.

AC  16; Fort +18, Ref +8, Will +11

HP 160; Immunities fire, mental, piercing, precision, critical hits; Weaknesses cold 5

Attack of Opportunity [R]

Speed 20 feet, climb 20 feet

Melee [>] pseudopod +17, Damage 2d10+6 bludgeoning plus 1d8 persistent fire and Grab

Ranged [>] ejected glob +17 (brutal, range increment 20 feet), Damage 3d6+6 bludgeoning plus 1d8 persistent fire and cooling glob

Constrict [>] 1d8+6 bludgeoning plus 1d8 persistent fire, DC 24

Cooling Glob A fuming sludge's ejected globs cling to targets. A creature hit by an ejected glob Strike is encumbered for 1 round. If the attack was a critical hit, the creature is instead restrained for 1 round (Escape DC 24).

The Slithering, page 63.