Corrupting Ooze

A corrupting ooze boils and bubbles with rank marsh gas and the fetid stench of the sewer, and it leaves a stinking trail of acidic slime wherever it goes.

Swim and Walk. A corrupting ooze is a festering slime that can slither and even swim like a gigantic sea slug, or it can assume a roughly humanoid form and shamble through the streets, though its stench and its lack of speech make it unlikely that anyone might mistake it for a normal person. They are frequently soldiers and servants to heralds of blood and darkness.

Dissolve Bones. A corrupting ooze can absorb an entire large animal or small person, simply dissolving everything including the bones in a matter of minutes. This function makes them an important element of certain dark rituals.

Corrupting Ooze

Large ooze, neutral evil

Armor Class 12 (natural armor)

Hit Points 115 (10d10 + 60)

Speed 20 ft., swim 30 ft.

16 (+3) 10 (+0) 22 (+6) 4 (-3) 2 (-4) 1 (-5)

Skills Stealth +3

Damage Resistances slashing, bludgeoning

Damage Immunities acid, fire, poison

Condition Immunities exhaustion, frightened, paralyzed, petrified, poisoned

Senses blindsight 60 ft., tremorsense 60 ft., passive Perception 5


Challenge 5 (1,800 XP)

Corrupting Touch. When a corrupting ooze scores a critical hit or starts its turn with a foe Grappled, it can dissolve one leather, metal, or wood item of its choosing in the possession of the target creature. A mundane item is destroyed automatically; a magical item is destroyed if its owner fails to make a successful DC 16 Dexterity saving throw.

Strong Swimmer. A corrupting ooze naturally floats on the surface of water. It swims with a pulsating motion that propels it faster than walking speed.


Slam. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) bludgeoning damage plus 3 (1d6) acid damage, and the target is Grappled (escape DC 13).