The ground in this area seems to be alive. Suddenly, a mass of flowing gunk and muck, the same texture and color as the ground, rises from the area and moves in your direction.
Dun Pudding CR 7
A dun pudding secretes a digestive acid that dissolves organic material and metal quickly, but does not affect stone. Each time a creature suffers damage from a dun pudding’s acid, its clothing and armor take the same amount of damage from the acid. A DC 20 Reflex save prevents damage to clothing and armor. A metal or wooden weapon that strikes a dun pudding takes 2d6 acid damage unless the weapon’s wielder succeeds on a DC 20 Reflex save. If a dun pudding remains in contact with a wooden or metal object for 1 full round, it inflicts 20 points of acid damage (no save) to the object. The save DCs are Constitution-based.
An opponent that is being constricted by a dun pudding suffers a -4 penalty on Reflex saves made to resist acid damage applying to clothing and armor.
Environment any warm land and underground
A variety of the black pudding, the dun pudding is found only in warm, dry, arid regions. It is light tan or brown in color.
Dun puddings attack by grabbing and constricting their prey.
Dun Pudding from the Tome of Horrors Complete, Copyright 2011, Necromancer Games, Inc., published and distributed by Frog God Games; Author Scott Greene, based on original material by Gary Gygax.