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May 7, 2013Posted by on
In the stat block below np = number of packs in the swarm. A pack contains 30 rats. The number of packs in the swarm determines the Challenge Rating (divide the total number of rats by 30). If “np” is preceded by a number, multiply the number of packs in the swarm by that number. For example where it says Listen = +3 np; If there are 6 packs (180 rats) in the swarm then Listen will =+18 (3×6).
CRANIUM RAT SWARM (CR = np) – NE Diminutive Magical Beast (Extraplanar, Swarm) (FF p.167 – modified)
DETECTION – Senses Darkvision 60-ft; Listen +3 Packs, Spot +3 Packs; Init +7; Languages Cranium rats do not speak, but swarms containing 5 or more packs can communicate telepathically.
DEFENSES – AC 14 (+3 Dex, +1 natural), Touch 13, Flat Footed 11; hp 18 np; Resist cold 10
ACTIONS – Spd 40 ft., climb 20 ft.; Melee Swarm (3d6); Space 5 ft. (1 pack), 10 ft. (2 to 10 packs), 15 ft.(11 to 20 packs) ; Reach 0 ft.; Base Atk 2 ½ np; Grapple -; SA Distraction, mind blast, spells
SQ hive mind, low-light vision, swarm traits, telepathy
STR 2, DEX 17, CON 14, INT 2 np (max 20), WIS 14, CHA 13
FORT np+3 (max 16), REF np+4 (max 19), WILL np+2 (max 12)
FEATS – Alertness, Combat Casting, Iron Will
SKILLS – Climb +3 np, Listen +3 np, Spot +3 np, (if the number of packs in the swarm is 10 or more add: Balance +29, Concentration +29, Sense Motive +31)
Spells: If the swarm’s np (number of packs) is 4 or less its intelligence is too low to cast spells. Larger swarms can cast arcane spells as a sorcerer of a level equal to the swarm’s np up to a maximum 10th-level sorcerer (spells/day and spells known are the same as for a sorcerer of the appropriate level; save DC is 10+ the sorcerer level + spell level). A typical 10th-level spells known list: 0—dancing lights, daze, detect magic, flare, ghost sound, mage hand, open/close, prestidigitation, grease; 1st— charm person, expeditious retreat, magic missile, ray of enfeeblement, shocking grasp; 2nd—blur, knock, mirror image, see invisibility; 3rd—fireball, lightning bolt, slow; 4th—contagion, fire shield; 5th—hold monster.
Distraction (Ex): Any living creature that begins its turn with a swarm in its space must succeed on a Fortitude save or be nauseated for 1 round. The save DC is Constitution-based. DC 15 for np of 4 or less, DC 18 for np 5 to 9, DC 24 for np 10 or more.
Mind Blast (Su): This attack is a 60-foot cone. Anyone caught in this cone must succeed on a Will save (DC 14 for np of 4 or less, DC 17 for np 5 to 9, DC 23 for np 10 or more) or be stunned for 3d4 rounds. A cranium rat swarm with 4 or less packs can use this power every 2 rounds. Larger swarms can use it at will.
Hive Mind (Ex): A cranium rat swarm has a hive mind, which makes it susceptible to mind-affecting spells. For purposes of such spells, the swarm is a single creature of the magical beast type.
Telepathy (Su): An swarm of cranium rats that contain 5 or more packs can communicate telepathically with any creature within 80 feet that has a language.
Skills: Cranium rat swarms have a +8 racial bonus on Climb checks and can always choose to take10 on Climb checks, even if rushed or threatened.
Combat: While dangerous and unpleasant, cranium rats are not aggressive creatures. They avoid open attacks in favor of flight or ambushes. Cranium rats use their spells and mind blast ability to soften or incapacitate victims before swarming over them, then they drain their victims’ blood through a hundred tiny wounds.
Like ten thousand eyes and ears dispatched to gather secrets for some dark deity of knowledge, cranium rats are everywhere—seeing, hearing, and sharing what they learn in a bizarre hive mind.
An individual cranium rat is almost indistinguishable from a normal rodent, except that a portion of its large brain is exposed and pulses with a soft glow. Singly, the creatures are also virtually identical to normal rats, but they are never encountered singly. A pack of cranium rats has a group mind—and the more rats, the more intelligent the group mind.