Brood Leech Swarm

Brood Leech Swarm Creature4

N Large Amphibious Animal Swarm

Senses Perception +9; tremorsense 30 feet

Skills Athletics +8, Stealth +11

Str +0, Dex +3, Con +4, Int -5, Wis +1, Cha -5

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AC 19; Fort +12, Ref +11, Will +9

HP 40; Immunities precision, swarm mind; Weaknesses area damage 5, salt 5, splash damage 5; Resistances bludgeoning 2, piercing 5, slashing 5

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Speed 5 feet, swim 20 feet

Blood Draining Bites [one-action] Each enemy in the swarm’s space takes 2d6 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)

About

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.