Fungus, Muckmaw

Family: Fungi

Large plant, unaligned

Armor Class 12
Hit Points 85 (10d10 + 30)
Speed 0 ft., swim 10 ft.

18 (+4) 14 (+2) 17 (+3) 1 (-5) 16 (+3) 6 (-2)

Skills Perception +6, Stealth +5
Damage Immunities acid
Condition Immunities deafened, exhaustion, prone
Senses tremorsense 60 ft., passive Perception 16
Proficiency Bonus +3
Challenge 5 (1,800 XP)


  • Amphibious. The muckmaw can breathe air and water.
  • Grasping Tendrils. The muckmaw can have up to six tendrils at a time. Each tendril can be attacked (AC 12; 10 hit points; immunity to acid damage). Destroying a tendril deals no damage to the muckmaw, which can extrude a replacement tendril on its next turn. A tendril can also be broken if a creature takes an action and succeeds on a DC 15 Strength check against it.
  • Hive Mind. All fungi within 50 miles of are in constant communication. If one is aware of a particular danger, they all are. No fungus in a group is considered surprised unless all of them are.


  • Multiattack. The muckmaw makes four attacks with its tendrils, uses Reel, and makes one attack with its bite.
  • Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 13 (2d8 + 4) piercing damage. The target is grappled (escape DC 15) Until this grapple ends, the target is restrained, and the muckmaw can’t bite another target
  • Swallow. The muckmaw makes one bite attack against a Medium or smaller target it is grappling. If the attack hits, the target is swallowed, and the grapple ends. The swallowed target is blinded and restrained, it has total cover against attacks and other effects outside the muckmaw, and it takes 10 (3d6) acid damage at the start of each of the muckmaw’s turns. The muckmaw can have only one target swallowed at a time. If the muckmaw dies, a swallowed creature is no longer restrained by it and can escape from the corpse using 5 feet of movement, exiting prone.
  • Tendril. Melee Weapon Attack: +7 to hit, reach 25 ft., one creature. Hit: The target is grappled (escape DC 15). Until the grapple ends, the target is restrained and the muckmaw can’t use the same tendril on another target.
  • Reel. The muckmaw pulls each creature grappled by it up to 10 feet straight toward it.


Roiling from the muck is a mess of flailing tentacles surrounding three blue eyes and a fanged maw.

Muckmaws are worm-like creatures who burrow into the muck, rising when they detect movement on the surface of the swamps and marshes where they dwell. They keep their tentacles tightly coiled by their mouths until they surface, where they then lash out at anything that moves and attempt to draw it into their waiting jaws.

Section 15: Copyright Notice

5E Foes: Video Game Bestiary. Copyright 2022, Mal and Tal Enterprises, LLC; Author Michael J. Tresca.

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