5e SRD >Creatures >

Ooze, Mudbog

Large ooze, unaligned

Armor Class 5
Hit Points 76 (9d10 + 27)
Speed 10 ft., swim 10 ft.

20 (+5) 8 (-1) 17 (+3) 1 (-5) 10 (+0) 3 (-4)

Skills Stealth +1
Damage Resistances fire
Damage Immunities acid, psychic
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 10
Challenge 2 (450 XP)


  • Acid. A mudbog secretes a digestive acid that quickly dissolves organic material, but not metal or stone. A creature that attacks the mudbog takes 3 (1d6) acid damage. Any wood or other organic material that touches the mudbog is pitted. Wooden weapons suffer a cumulative -1 penalty to damage rolls made with it unless it is magical. When this penalty reaches -5, the weapon is destroyed.
  • Amorphous. The ooze can move through a space as narrow as one inch wide without squeezing.
  • False Appearance. The mudbog, while not moving, is indistinguishable from a mud puddle.


  • Engulf. The mudbog moves up to its speed. While doing so, it can enter Medium or smaller creatures’ spaces. Whenever the mudbog enters a creature’s space, the creature must make a DC13 Dexterity saving throw. On a failure, the mudbog enters the creature’s space, and the creature takes 10 (3d6) acid damage and is engulfed. On a success, the creature can choose to be pushed five feet back or to the side of the mudbog. The engulfed creature can’t breathe, is restrained, and takes 21 (6d6) acid damage at the start of each of the ooze’s turns. When the mudbog moves, the engulfed creature moves with it. An engulfed creature can try to escape by using an action to make a DC 13 Strength check. On a success, the creature escapes and enters a space of its choice within five feet of the ooze.
Section 15: Copyright Notice

Adventures in Tehuatl, © 2020, Frog God Games; Authors Tom Knauss, Tim Hitchcock, and Rob Manning

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