From Pathfinder #177: Burning Tundra, which isn't enabled.

Tar Ooze

CREATURE 10

UNCOMMON HUGE MINDLESS OOZE

Perception +18; motion sense 60 feet

Skills Athletics +23, Stealth +13 (+17 in tar pits)

Str +8, Dex -3, Con +8, Int -5, Wis +0, Cha -5

Motion Sense

A tar ooze can sense nearby motion through vibration and movement.

AC 18; Fort +22, Ref +10, Will +15

HP 255; Immunities critical hits, precision, unconscious, visual; Weaknesses fire 10

Sticky

Trigger The tar ooze is hit by a melee attack

Effect The ooze attempts to Grapple the creature that hit it. The ooze must still spend an action to extend the duration of the Grab on subsequent rounds, as normal.

Speed 15 feet, climb 10 feet

Melee Pseudopod +23 (reach 10, unarmed), Damage 2d10+14 bludgeoning plus Improved Grab

Engulf

DC 29 Reflex, 6d6 bludgeoning damage, Escape, Rupture 17

The monster Strides up to double its Speed and can move through the spaces of any creatures in its path. Any creature of the monster's size or smaller whose space the monster moves through can attempt a Reflex save with the listed DC to avoid being engulfed. A creature unable to act automatically critically fails this save. If a creature succeeds at its save, it can choose to be either pushed aside (out of the monster's path) or pushed in front of the monster to the end of the monster's movement. The monster can attempt to Engulf the same creature only once in a single use of Engulf. The monster can contain as many creatures as can fit in its space.

A creature that fails its save is pulled into the monster's body. It is Grabbed, is Slowed 1, and has to hold its breath or start suffocating. The creature takes the listed amount of damage when first engulfed and at the end of each of its turns while it's engulfed. An engulfed creature can get free by Escaping against the listed escape DC. An engulfed creature can attack the monster engulfing it, but only with unarmed attacks or with weapons of light Bulk or less. The engulfing creature is Off-Guard against the attack. If the monster takes piercing or slashing damage equaling or exceeding the listed Rupture value from a single attack or spell, the engulfed creature cuts itself free.

Effect: Engulf and Swallow Whole

A creature that gets free by either method can immediately breathe and exits the swallowing monster's space.

If the monster dies, all creatures it has engulfed are automatically released as the monster's form loses cohesion.

Viscous Sludge

The tar ooze can have up to eight creatures grabbed at the same time; doing so doesn't prevent it from making pseudopod Strikes. A tar ooze can climb on ceilings and other inverted surfaces, though such surfaces are difficult terrain.

Zombification (primal)

A creature slain while engulfed by a tar ooze undergoes a horrifying transformation and crawls from the ooze a week later as a tar zombie.

Improved Grab

Trigger The monster's last action was a successful Strike that lists Improved Grab in its damage entry, or the monster has a creature Grabbed or Restrained

Effect If used after a Strike, the monster attempts to Grapple the creature using the body part it attacked with as a free action. This attempt neither applies nor counts toward the creature's multiple attack penalty.

The monster can instead use Improved Grab as an action and choose one creature it's grabbing or restraining with an appendage that has Improved Grab to automatically extend that condition to the end of the monster's next turn.

Pathfinder #177: Burning TundraOGL