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Brood Leech 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.

Recall Knowledge - Animal (Nature): DC 19

Elite | Normal | Weak
Proficiency without Level

Brood Leech SwarmCreature 4

Source Bestiary 2 pg. 156 2.0
Perception +9; tremorsense 30 feet
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 40; 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
Blood Draining Bites Single ActionSingle 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)

All Monsters in "Leech"

Brood Leech Swarm4
Giant Leech2


Source Bestiary 2 pg. 156 2.0
Though valued by apothecaries and field medics as methods to reduce swelling or drain blood, leeches are despised by most who encounter them, regardless of the setting.

Sidebar - Related Creatures Leech Species

The spotted hooktooth leech is often found in areas frequented by trolls, who sometimes wear them as awful decorations, relying on their regeneration to control the bleeding effects. The gigantic elephant leech feeds on immense beasts of the swamplands or jungles, like elephants, froghemoths, and dinosaurs, attacking from unexpected range. But it's the relatively small gutleech that provides the most fuel for nightmares, due to its awful habit of feeding on victims from inside.