Trilobite SwarmCreature 3

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Source Pathfinder Bestiary 3
Perception +9 (darkvision, wavesense (imprecise) 60 feet)
Languages none
Skills Athletics +8, Stealth +9, Survival +7
Str +1, Dex +4, Con +3, Int -5, Wis +2, Cha +0

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AC 18; Fort +10; Reflex +9; Will +7;
HP 30
Speed 0 feet (swim 25 feet)
Immunities precision, swarm mind
Weaknesses Area Damage 5, Splash Damage 5
Resistances Bludgeoning 3, Piercing 3, Slashing 5

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Darkvision

A monster with darkvision can see perfectly well in areas of darkness and dim light, though such vision is in black and white only. Some forms of magical darkness, such as a 4th-level Darkness spell, block normal darkvision. A monster with Greater Darkvision, however, can see through even these forms of magical darkness.

Wavesense (Imprecise) 60 feet

This sense allows a monster to feel vibrations caused by movement through a liquid. It's an imprecise sense with a limited range (listed in the ability). Wavesense functions only if monster and the subject are in the same body of liquid, and only if the subject is moving through the liquid.

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.

Clinging Bites

The trilobites in the swarm latch onto creatures and gnaw at them. Each enemy in the swarm's space takes 2d6 slashing damage (DC 18 basic reflex save).

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Trilobites typically live in close proximity to others of their kind. On rare occasions, particularly when the most common prey around is larger than what a single trilobite can take down, they form swarms that seem to actively cooperate with each other. These swarms latch onto their prey, and the combined efforts of so many trilobites at once make escape difficult.

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Often overlooked as little more than water-dwelling pests, trilobites are a varied species of arthropods found throughout the seas and oceans of Golarion. So ancient and widespread are these critters that trilobite fossils are as commonly found as living specimens.

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Traits