Gargantuan monstrosity, unaligned

Armor Class 18 (natural armor)
Hit Points 195 (10d20 + 90)
Speed 40 ft., climb 40 ft., swim 60 ft.

30 (+10) 10 (+0) 28 (+9) 18 (+4) 16 (+3) 22 (+6)

Saving Throws Str +15, Con +14
Skills Perception +8, Stealth +5
Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison
Senses blindsight 60 ft., passive Perception 18
Languages Common, Draconic, Terran
Challenge 15 (13,000 XP)


  • Hold Breath. The choggenmugger can hold its breach for 30 minutes.
  • Legendary Resistance (3/day). If the choggenmugger fails a saving throw, it can choose to succeed instead.
  • Terrestrial Concealment. When the choggenmugger remains motionless and is in a swamp, water, or wooded area, it is indistinguishable from a natural rock formation covered with moss or algae.


  • Multiattack. The choggenmugger can use its swallow. Then it makes two claw attacks and one bite or tail attack.
  • Bite. Melee Weapon Attack: +15 to hit, reach 15 ft., one target. Hit: 19 (2d8 + 10) piercing damage. The target is grappled (escape DC 23). Until this grapple ends, the tar get is restrained, and the choggenmugger can’t bite another target.
  • Claws. Melee Weapon Attack: +15 to hit, reach 1 5 ft., one target. Hit: 23 (2d12 + 10) slashing damage.
  • Tail. Melee Weapon Attack: +15 to hit, reach 20 ft., one tar get Hit:19 (2d8 + 10) bludgeoning damage.
  • Swallow. The choggenmugger makes one bite attack against a large or smaller target it is grappling. If the attack hits, the target is swallowed, and the grapple ends. The swallowed tar get is blinded and restrained, it has total cover against attacks and other effects outside the choggenmugger, and it takes 2 1 (6d6) acid damage at the start of each of its turns. The choggenmugger can have only two targets swallowed at a time. If the choggenmugger takes 25 damage or more on a single turn from a creature inside it, the choggenmugger must succeed on a DC 23 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, who are knocked prone in a space within 10 feet in front of its maw. If the choggenmugger dies, a swallowed creature is no longer restrained and can escape from the corpse by using 15 feet of movement, exiting prone.
  • Stomp (Recharge 5-6). The choggenmugger slams the ground, making a wave of water or earth. Each creature within 20 feet of the choggenmugger is knocked prone and must make a DC 23 Dexterity saving throw, taking 54 (12d8) bludgeoning damage on a failed save, or half as much damage on a successful one. Creatures that failed their save are also pushed up to 10 feet away from the choggenmugger. Creatures larger than medium size are not knocked prone.


The choggenmugger can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s tum. The choggenmugger regains legendary actions at the start of their turn.

  • Lumbering Gait. The choggenmugger may move a distance up co its speed. This movement doesn’t provoke opportunity attacks.
  • Reflexive Strike. The choggenmugger makes a tail or claw attack.
  • Snack. The choggenmugger makes a bite or swallow attack.


In former ages there had been many dragons, but Choggenmugger was so fond of dragons that he had eaten all of them long ago. There had also been great serpents and crocodiles in the forest marshes, but all had gone to feed the hunger of Choggenmugger. The people knew well there was no use opposing the Great Beast, so when one unfortunately met with it he gave himself up for lost.

Choggenmuggers are massive, vicious reptiles that inhabit lowland marshes and swamps. They are omnivorous, but prefer a diet of young dragons, dragonettes, snakes, and other reptiles.

A choggenmugger has two sets of razorsharp teeth in an enormous mouth, Its four webbed feet have sharp talons that are as hard as adamantine. Its body ends at a thick, prehensile tail covered with murky-green scales, which provide natural armor and help it blend into swamp habitat. While lurking, the choggenmugger’s body can resemble a rocky outcropping or partially submerged log.

After a meal, choggenmuggers nest in dens to sleep while their meals digest. They lie surrounded by grim trophy collections which include everything from gems and riches of their victims to bits of uneaten body parts, a grisly hoard that creates a distinctive odor.

It may be months before a choggenmugger awakens, hungry for another meal.

Section 15: Copyright Notice

5e Adventures in Oz Beasts & Beings Copyright 2022, Double Critical, LLC.

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