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Brood Leech Swarm

Creature 4 — amphibious, animal, swarm

Most smaller species of leeches do not tend to swarm, but brood leeches are prone to gathering in seething, undulant mats of squirming gluttony. When they gather in sufficient numbers to swarm, they eschew the stealth of a lone leech's feeding methods in favor of swift and merciless feeding. In these situations, their mild venom can affect much larger creatures than their usual prey.

Source: pathfinder-monster-core-2

Perception +9
Skills athletics +8, stealth +11
Str
+0
Dex
+3
Con
+4
Int
-5
Wis
+1
Cha
-5
AC 19 Fort +12 Ref +11 Will +9
HP 50
Immunities precision, swarm-mind
Resistances bludgeoning 2, piercing 5, slashing 5
Weaknesses area-damage 5, salt 5, splash-damage 5
Speed 5 feet, swim 20 feet

Abilities

Tremorsense 30 feet — Tremorsense
Swarm Mind — Swarm Mind
Blood Draining Bites — Each enemy in the swarm's space takes 2d6 piercing damage (DC 21 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).

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