Brood Leech Swarm

Pathfinder Remaster. Stats use the Pathfinder Remaster rules from Pathfinder Monster Core 2.

The Brood Leech Swarm is a Level 4 creature, with Armor Class 19 and 50 hit points. A writhing mass of ravenous, blood-drinking parasites, the brood leech swarm thrives in stagnant waters.

Brood Leech Swarm, original Pathfinder 2e monster artwork by ZapGM

Stat Block

Abilities & Attacks

Tremorsense 30 feet. Tremorsense allows a monster to feel the vibrations through a solid surface caused by movement. It is an imprecise sense with a limited range (listed in the ability). Tremorsense functions only if the monster is on the same surface as the subject, and only if the subject is moving along (or burrowing through) the surface. Swarm Mind. This monster doesn't have a single mind (typically because it's a swarm of smaller creatures), and is immune to mental effects that target only a specific number of creatures. It is still subject to mental effects that affect all creatures in an area. Blood Draining Bites (1 action). 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 save. 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).

Common Questions

How much HP does a Brood Leech Swarm have?

50 hit points.

What level is a Brood Leech Swarm?

Level 4.

What is a Brood Leech Swarm's Armor Class?

AC 19.

How fast can a Brood Leech Swarm move?

Speed 5 ft., swim 20 ft.

Use Brood Leech Swarm at your table

Original custom artwork found nowhere else on the web, free to view. Copy-paste the full stat block straight into your notes, a Word doc, or your VTT, or sign in to claim Brood Leech Swarm into a ZapGM campaign and customize it further.

License

This product is licensed under the ORC License located at the Library of Congress at TX 9-307-067 and available online at various locations including paizo.com/orclicense, azoralaw.com/orclicense, and others. All warranties are disclaimed as set forth therein.

Game mechanics on this page are based on Pathfinder Monster Core 2 © 2025 Paizo Inc. Full attribution is on zapgm.com/legal.

The game mechanics ZapGM publishes from these books remain ORC Licensed Material: you may reuse them under the ORC License.

The creature description and artwork are ZapGM Reserved Material.

Pathfinder is a trademark of Paizo Inc. ZapGM is not affiliated with Paizo.

Legal notices

More Monsters