Bone Rat SwarmWith the scrabble of hundreds of bony claws, a mass of tiny skeletal creatures surges across the floor, with pinpoints of red light gleaming in their empty eye sockets.A bone rat swarm is a mass of undead skeletal rats. Though individually such creatures would pose little risk, in great numbers they can strip a creature clean in short order.
Table 1: The Bone Rat Swarm
Hit Die: d12Level BAB Ref Fort Will Dex NA Special Abilities
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1 +0 +0 +0 +2 +2 +2 Bone Rat Swarm Body, Damage Reduction
2 +1 +0 +0 +3 +4 +4 Immunity to Cold, Distraction
Class skills (2 + Int modifier per level): None
Requirements:None
Class FeaturesA Bone Rat Swarm seeks to engulf and suck dry any living prey it encounters. A Bone Rat Swarm is never sated.
Bone Rat Swarm Body The Bone Rat Swarm loses all other racial bonuses, and gains the following Undead traits.
* No Constitution score.
* Darkvision out to 60 feet.
* Immunity to all mind-affecting effects (charms, compulsions, phantasms, patterns, and morale effects).
* Immunity to poison, sleep effects, paralysis, stunning, disease, and death effects.
* Not subject to critical hits, nonlethal damage, ability drain, or energy drain. Immune to damage to its physical ability scores (Strength, Dexterity, and Constitution), as well as to fatigue and exhaustion effects.
* Heals naturally.
* Immunity to any effect that requires a Fortitude save (unless the effect also works on objects or is harmless).
* Uses its Charisma modifier for Concentration checks.
* Not at risk of death from massive damage, but when reduced to 0 hit points or less, it is immediately destroyed.
* Not affected by raise dead and reincarnate spells or abilities. Resurrection and true resurrection can affect undead creatures. These spells turn undead creatures back into the living creatures they were before becoming undead.
* Undead do not breathe, eat, or sleep.
It is a tiny sized undead swarm with a base speed of 15 feet, and a climb speed of 15 feet. It gains tiny swarm traits, and a radius of 10 feet.
Ability Score IncreaseAt each level it gains a +2 bonus to its Dexterity.
Swarm AttackA bone rat swarm deals 1d6 points of damage to any creature whose space it occupies at the end of its move.
Damage ReductionThe bone rat swarm gains damage reduction 5/bludgeoning.
Immunity to ColdThe bone rat swarm is completely immune to all cold damage.
Distraction (Ex) Any living creature that begins its turn with a bone rat swarm in its space must succeed on a DC 10 + 1/2 class level + charisma modifier Fortitude save or be nauseated for 1 round.