Acid (Ex): The creature secretes a digestive acid that dissolves organic material and metal quickly, but does not affect stone. Any melee hit or constrict attack deals acid damage, and the opponent's armor and clothing dissolve and become useless immediately unless they succeed on DC 21 Reflex saves. A metal or wooden weapon that strikes a black pudding also dissolves immediately unless it succeeds on a DC 21 Reflex save. The save DCs are Constitution-based.

The pudding's acidic touch deals 21 points of damage per round to wooden or metal objects, but the ooze must remain in contact with the object for 1 full round to deal this damage.

Constrict (Ex): A black pudding deals automatic slam and acid damage with a successful grapple check. The opponent's clothing and armor take a -4 penalty on Reflex saves against the acid.

Improved Grab (Ex): To use this ability, a black pudding must hit with its slam attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it wins the grapple check, it establishes a hold and can constrict.

Split (Ex): Slashing and piercing weapons deal no damage to a black pudding. Instead the creature splits into two identical puddings, each with half of the original's current hit points (round down). A pudding with 10 hit points or less cannot be further split and dies if reduced to 0 hit points.

Skills: A black pudding has a +8 racial bonus on Climb checks and can always choose to take 10 on a Climb check, even if rushed or threatened.

Acid (Ex): A gelatinous cube's acid does not harm metal or stone.

Engulf (Ex): Although it moves slowly, a gelatinous cube can simply mow down Large or smaller creatures as a standard action. It cannot make a slam attack during a round in which it engulfs. The gelatinous cube merely has to move over the opponents, affecting as many as it can cover. Opponents can make opportunity attacks against the cube, but if they do so they are not entitled to a saving throw. Those who do not attempt attacks of opportunity must succeed on a DC 13 Reflex save or be engulfed; on a success, they are pushed back or aside (opponent's choice) as the cube moves forward. Engulfed creatures are subject to the cube's paralysis and acid, and are considered to be grappled and trapped within its body. The save DC is Strength-based and includes a +1 racial bonus.

Paralysis (Ex): A gelatinous cube secretes an anesthetizing slime. A target hit by a cube's melee or engulf attack must succeed on a DC 20 Fortitude save or be paralyzed for 3d6 rounds. The cube can automatically engulf a paralyzed opponent. The save DC is Constitution-based.

Transparent (Ex): Gelatinous cubes are hard to see, even under ideal conditions, and it takes a DC 15 Spot check to notice one. Creatures who fail to notice a cube and walk into it are automatically engulfed.

Acid (Ex): A gray ooze secretes a digestive acid that quickly dissolves organic material and metal, but not stone. Any melee hit or constrict attack deals acid damage. Armor or clothing dissolves and becomes useless immediately unless it succeeds on a DC 16 Reflex save. A metal or wooden weapon that strikes a gray ooze also dissolves immediately unless it succeeds on a DC 16 Reflex save. The save DCs are Constitution-based.

The ooze's acidic touch deals 16 points of damage per round to wooden or metal objects, but the ooze must remain in contact with the object for 1 full round to deal this damage.

Constrict (Ex): A gray ooze deals automatic slam and acid damage with a successful grapple check. The opponent's clothing and armor take a -4 penalty on Reflex saves against the acid.

Improved Grab (Ex): To use this ability, a gray ooze must hit with its slam attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it wins the grapple check, it establishes a hold and can constrict.

Transparent (Ex): A gray ooze is hard to identify, even under ideal conditions, and it takes a DC 15 Spot check to notice one. Creatures who fail to notice a gray ooze and walk into it are automatically hit with a melee attack for slam and acid damage.

Acid (Ex): An ochre jelly secretes a digestive acid that dissolves only flesh. Any melee hit or constrict attack deals acid damage.

Constrict (Ex): An ochre jelly deals automatic slam and acid damage with a successful grapple check.

Improved Grab (Ex): To use this ability, an ochre jelly must hit with its slam attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it wins the grapple check, it establishes a hold and can constrict.

Split (Ex): Slashing and piercing weapons and electricity attacks deal no damage to an ochre jelly. Instead the creature splits into two identical jellies, each with half of the original's current hit points (round down). A jelly with 10 hit points or less cannot be further split and dies if reduced to 0 it points.

Skills: An ochre jelly has a +8 racial bonus on Climb checks and can always choose to take 10 on a Climb check, even if rushed or threatened.