Skeletal Swarm

D&D 2024 monster: Skeletal Swarm. Source: Ghosts of Saltmarsh. challenge rating 2, creature type Undead, Large size, speed 30 ft. This swarm of bones found rising out of the sand in Isle of the Abbey is made from the remains of several animated skeletons. A skeletal swarm alternates its appearance between partially formed humanoid shapes and a chaotic, swirling mass. Undead Large 30 ft.