Pustulent Shambler

Pustulent Shambler is a gargantuan ooze (Challenge Rating 13).

Pustulent Shambler — fantasy monster illustration. Pustulent Shambler is a gargantuan ooze (Challenge Rating 13).
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AC: 10

HP: 232

Speed: walk 30 ft., climb 30 ft.

STR: 19

DEX: 5

CON: 20

INT: 3

WIS: 10

CHA: 1

Piles of dissolved bones, seemingly eaten away by acid, encircle this mound of quivering, pus-covered flesh._
Dissolvers of Bone. Crawling heaps of diseased flesh, pustulent shamblers possess a corrosive material that eats away at bone matter.
Keepers of Macabre Larders. Pustulent shamblers drag victims of bonerot to their lairs to feed on the boneless flesh. Though they idly devour their victims, they have enough awareness of potential retribution to keep a few corpses available to quickly heal themselves.
Connected to Bonerot. Pustulent shamblers have a preternatural link to the disease they inflict. This allows them to track escaping victims and be present when the disease overtakes their prey.
Ooze Nature. The pustulent shambler doesn’t require sleep.

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Further reading

Jetpack7 Game Master Series
The Game Master's Book of Random Encounters
Jeff Ashworth · 2020
The Game Master's Book of Traps, Puzzles and Dungeons
Jeff Ashworth · 2022
The Game Master's Book of Legendary Dragons
Aaron Hübrich · 2022
Last updated 7/27/2026·Tags: monster, ooze, gargantuan