The Ablutophobic Horror is a creature driven by an extreme fear of water and cleanliness. It has become a monstrous embodiment of filth and decay. It has a humanoid shape, but with skin that is cracked, peeling, and covered in grime and filth. Its hair is matted and full of debris. It is resistant to water-based attacks and spells. If forced to enter water, the creature takes damage and is hindered. The Ablutophobic Horror can expel a cloud of noxious filth that damages and weakens creatures caught within it. It can touch a creature to inflict a disease that causes the victim's body to deteriorate and become more susceptible to infection.

• A vast network of underground tunnels, filled with grime, filth, and stagnant water.
• The walls are covered in mold, mildew, and strange, slimy growths.
• The air is thick with the stench of decay and rot.
• The lair is filled with the creature's hoard of filth, including discarded clothing, broken furniture, and other contaminated items.
• There are several pools of stagnant water, which the Ablutophobic Horror avoids.

• Lair Actions: The Ablutophobic Horror can take three lair actions on its turn. It can use only one of the following options.

• Filth Cloud: The Ablutophobic Horror expels a cloud of noxious filth in a 15-foot radius. Each creature in the area must succeed on a DC 12 Constitution saving throw or take 3d6 poison damage and become poisoned for 1 minute.

• Contaminated Water: The Ablutophobic Horror can cause a pool of stagnant water in its lair to become even more contaminated. Creatures who drink from or wade through this water must succeed on a DC 13 Constitution saving throw or become infected with a disease that causes their body to deteriorate over time.

• Hidden Attack: The Ablutophobic Horror can use its action to make a surprise attack against a creature within 10 feet of it that it has not yet seen or heard.