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Waste Sponge in Dungeons & Dragons 5e

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Waste Sponge CR: 1/8

Small to Medium beast,
Armor Class: 11
Hit Points: 9 (2d4+4)
Speed: 0 ft

STR

1 -5

DEX

11 +0

CON

18 +4

INT

1 -5

WIS

3 -4

CHA

1 -5

Damage Resistances: Acid, Poison
Condition Immunities: Prone, Charmed, Frightened
Languages: -
Challenge Rating: 1/8 ( 40 XP)
Proficiency Bonus: +2

Spicules. Creatures that make a melee attack against the Waste Sponge must make a DC 8 Dexterity save or take 1d4 Poison Damage and 1d4 Piercing damage.   Wasteful. If a creature targetting the Waste Sponge misses an attack with poison or acid damage, the Waste Sponge gains 1d4 hitpoints.   No Mind. The Creature cannot succeed any saving throw or make any checks. They cannot be detected by spells such as Detect Thoughts or similar magic.   Unbearable Stench. Creatures that enter a 5ft. radius of the Waste Sponge must make a DC 16 Constitution save or be poisoned.

Waste Sponges are Porifera which have adapted to live in sewage ducts and heavily polluted waters. They can exist terrerstially in heavily humid and damp areas, often feedng off of mold, spore, or toxins in the air. The constant intake of toxins, heavy metals, and other materials causes what is usually the smooth surface of a sponge into a coarse and hard structure akin to a rock. The spicules that lined the skin of this porifera are enlarged and coated in toxins akin to tetanus. While they purify the air and water around them, their bodies are incredibly toxic and a hazard to passerbyes, and their sheer weight causes them to crush anything they've attached to., if not heavily damage it.   Salvage. Considered a pest, most city officials and guards will pay for their removal. Their spicules can be harvested and drained of their toxin, equating in effect to Wyvern Poison when mixed with materials costing 100gp.

Suggested Environments

They exist in humid and heavily polluted areas, such as sewer systems in large cities or swamps. The air around tehir environments is unusally clean smelling, excpet for teh area immediately surrounding the Porifera.

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by 3 Armored Kittens · Prodromos v.1.1 - World Anvil 0.9.15.050 © 2017-2025 [en] | Anvil Time: 04:12, Jun 23 2026