Muk (5e Creature)
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Medium ooze, chaotic evil
Saving Throws Str +4, Con +5
Amorphous. The pudding can move through a space as narrow as 1 inch wide without squeezing. It can also seep in through 5ft dirt or wooden walls eating it away as it passes through.
Corrosive form. Corrosive Form. A creature that touches the pudding or hits it with a melee attack while within 5 feet of it takes 4 (1d8) acid damage. Any nonmagical weapon made of metal or wood that hits the pudding corrodes. After dealing damage, the weapon takes a permanent and cumulative -1 penalty to damage rolls. If its penalty drops to -5, the weapon is destroyed. Nonmagical ammunition made of metal or wood that hits the pudding is destroyed after dealing damage. The pudding can eat through 2-inch-thick, nonmagical wood or metal in 1 round.
Stench. Any creature within 20 ft will smell a smell so awful, it can cause fainting. Any targets entering 20 ft within Muk's range must make a DC 8 Constitution check or be paralyzed for two rounds. On a successful roll the targets are immune to the stench for 12 hours. Plant based creatures are instantly poisoned.
Poison touch. Anything the Muk touches receives and additional +2 hit points of damage, Any plant based object or living thing the Muk touches will begin to rot profusely.
Gluttony. The more the Muk eats the bigger it gets, if it kills and succesfully devours a target all of its stats increase by +1 temporarily.
Multiattack. Muk uses its three Pseudopod arms to grapple its prey then either a Poison gas attack or a sludge Bomb.
Pseudopod Arms. Melee Weapon Attack: +2 to hit, reach 15 ft., three targets. Hit: 10 (1d6 + 3) Acid damage. The Muk may attempt a single grapple for one target in particular, it has an advantage on this role.
Sludge Bomb. Ranged Spell Attack: +5 to hit, range 10/20 ft., one target. Hit: 24 (2d8 + 3) Poison damage.
Poison Gas. Ranged Spell Attack: range 80/320 ft., one target. Hit:All targets within 10 ft of Muk must succeed on a DC 14 Constitution check, on a failure the target must receive 11 (1d6+7) worth of Poison damage and you are poisoned for 1d4+1 rounds, receiving 1d4 worth of damage for each round.
Muks are large, cruel creatures that wander dungeons and cave systems in search for anything they can fit in their mouths. They will atempt to knock out their prey through ambush attacks and devour them before they can retaliate, they will often eat carcasses days to months old, as well as anything on them, when a Muk escapes the vicious underground to the surface panic will often ensue, they feared as monstrous souless, abominations.