Skum

D&D 2024 monster: Skum. Source: Ghosts of Saltmarsh. challenge rating 5, creature type Aberration, Medium size, speed 20 ft., swim 40 ft. Several poor souls around the Styes have succumbed to an aboleth's magic through its disease-bearing touch. Transformed into creatures called skum, they barely resemble their past forms, their skin turning slimy and translucent while their limbs warp to resemble those of deep-sea oddities. The change makes them dependent on water, which they must immerse themselves in regularly lest they experience painful-and potentially lethal-skin eruptions. Skum are bound to their aboleth master not just by their cursed state, but by a psychic bond that compels them to serve its every sinister whim. Aberration Medium 20 ft., swim 40 ft.