Fire Jellyfish SwarmCreature 6
Source Pathfinder Monster Core 2
Perception +11 (low light vision)
Languages none
Skills Acrobatics +15
Str -4, Dex +5, Con +4, Int -5, Wis +0, Cha -5
AC 13; Fort +16; Reflex +15; Will +10;
HP 155
Speed 0 feet (swim 20 feet)
Immunities critical hits, precision, swarm mind
Weaknesses Area Damage 7, Splash Damage 7
Resistances Bludgeoning 9, Piercing 9, Poison 10, Slashing 5
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.
Agile SwimmerFire jellyfish swarms use Acrobatics to Swim.
Burning Swarm
(poison)Each enemy in the swarm's space takes 3d8 poison damage (DC 24 reflex save) and is exposed to fire jelly venom.
Fire Jelly Venom (poison)Saving Throw DC 24 fortitude
Maximum Duration 6 rounds
Stage 1 Clumsy 1 (1 round)
Stage 2 Clumsy 2 (1 round)
Stage 3 Clumsy 3 (1 round)
While individually one of these fist-sized jellyfish is merely a nuisance, in great numbers, fire jellyfish can form into dangerous swarms. Bobbing in the water, they create a cloud of stinging tentacles. They were named in part for their bright coloration, but those who are stung by fire jellyfish learn the larger reason for their name—the pain of their stings is comparable to being burned alive.
Many varieties of jellyfish drift through the world's oceans, feeding on fish and other tiny marine creatures. However, deadly species of monstrous jellyfish pose a threat to unwary swimmers and sailors alike. Note that while jellyfish are animals, they also have the mindless trait because they lack a centralized nervous system.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
AnimalAn animal is a creature with a relatively low intelligence. It typically doesn't have an Intelligence attribute modifier over –4, can't speak languages, and can't be trained in Intelligence-based skills.
AquaticAquatic creatures are at home underwater. Their bludgeoning and slashing unarmed Strikes don't take the usual –2 penalty for being underwater. Aquatic creatures can breathe water but not air.
MindlessA mindless creature has either programmed or rudimentary mental attributes. Most, if not all, of their mental attribute modifiers are –5. They are immune to all mental effects.
SwarmA swarm is a mass or cloud of creatures that functions as one monster. Its size entry gives the size of the entire mass, though for most swarms the individual creatures that make up that mass are Tiny. A swarm can occupy the same space as other creatures and must do so in order to use its damaging action. A swarm typically has weakness to effects that deal damage over an area (like area spells and splash weapons). Swarms are immune to the grabbed, prone, and restrained conditions.