Brood Leech Swarm

Creature 4

Large
amphibious
animal
swarm

Perception: +9; tremorsense (imprecise) 30 feet
Skills: Athletics +8, Stealth +11; Str +0, Dex +3, Con +4, Int −5, Wis +1, Cha −5

Tremorsense 30 feet

AC: 19; Fort +12, Ref +11, Will +9
HP: 50; Immunities precision, swarm mind; Weaknesses area damage 5, salt 5, splash damage 5; Resistances bludgeoning 2, piercing 5, slashing 5

Swarm Mind

Speed: 5 feet, swim 20 feet

Blood Draining Bites ◆ Each enemy in the swarm's space takes 2d6 piercing damage (DC 21 basic Reflex save). A creature who fails the Reflex save also takes 1d6 persistent bleed damage and is exposed to brood leech swarm venom.

Brood Leech Swarm Venom (poison) Saving Throw DC 21 Fortitude

Maximum Duration 6 rounds

Stage 1 Clumsy 1, Sickened 1, and –5-foot status penalty to Speed (1 round)

Stage 2 clumsy 1, sickened 1, and –10-foot status penalty to Speed (1 round).

Source: Pathfinder Monster Core 2

Running this fight? Add the brood leech swarm to the initiative tracker: type its name and the AC, hit points and Perception for initiative fill in, and the book button shows this stat block mid-fight.