Actions/Abilities/Traits: (Pathfinder 2e)
Ability
Bonesense
A bone skipper swarm identifies bones and creatures with a skeletal system in the listed range.
Ability
Marrow Rot
(disease) Marrow rot affects only creatures with a skeletal system; Saving Throw DC 24 Fortitude; Onset 1 day; Stage 1 enfeebled 1 (1 day); Stage 2 enfeebled 2 (1 day); Stage 3 enfeebled 2 and drained 1 (1 day)
Ability
Swarming Bites
Each enemy in the swarm's space takes 3d6 piercing damage (DC 24 basic Reflex save) plus exposure to marrow rot.
Trait
Animal
An animal is a creature with a relatively low intelligence. It typically doesn't have an Intelligence ability modifier over -4, can't speak languages, and can't be trained in Intelligence-based skills.
Trait
Swarm
A swarm is a mass or cloud of creatures that functions as one monster. Its size entry gives the size of the entire mass, though for most swarms the individual creatures that make up that mass are Tiny. A swarm can occupy the same space as other creatures, and must do so in order to use its damaging action. A swarm typically has weakness to effects that deal damage over an area (like area spells and splash weapons). Swarms are immune to the grappled, prone, and restrained conditions.
Immunity
precision
swarm mind
Perception
bonesense (imprecise) 30 feet
darkvision
Resistance
bludgeoning 5
piercing 9
slashing 9
Weakness
area damage 9
splash damage 9