Actions/Abilities/Traits: (Pathfinder 2e)
Ability
Flea Fever
(disease) Drain from flea fever can't be reduced or recovered from naturally until the disease is cured. Saving Throw DC 19 Fortitude; Stage 1 drained 1 (1d4 hours), Stage 2 drained 1 and sickened 1 (1 day), Stage 3 drained 2 and sickened 1 (1 day), Stage 4 drained 3 and sickened 1 (1 day), Stage 5 dead
Ability
Suck Blood
Circumstance: The flea swarm's last action was Swarming Bites, and it dealt dam
The flea swarm drinks the creatures' blood. Each victim becomes drained 1 and the swarm regains 3 HP for each victim drained.
Ability
Swarming Bites
Each enemy in the swarm's space takes 2d4+7 piercing damage and must attempt a DC 22 basic Reflex save. A creature that fails its save is exposed to flea fever.
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
disease
precision
swarm mind
Perception
low-light vision
scent (imprecise) 30 feet
Resistance
physical 8 (except bludgeoning)
Weakness
area damage 4
splash damage 4