A single, low-intelligence cranium rat uses its natural telepathy to communicate hunger, fear, and other base emotions. A swarm of cranium rats communicating telepathically "speaks" as one creature, often referring to itself using the collective pronouns "we" and "us."

Mind flayers create cranium rats by bombarding rats with psionic energy. Cranium rats are somewhat smarter than ordinary rats and behave as such. If enough cranium rats come together to form a swarm, they merge their minds into a single intelligence with the accumulated memories of all the swarm's constituents.

Swarm. The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny rat. The swarm can't regain hit points or gain temporary hit points. Telepathic Shroud. The swarm is immune to any effect that would sense its emotions or read its thoughts, as well as to all divination spells ...

A single, low-intelligence cranium rat uses its natural telepathy to communicate hunger, fear, and other base emotions. A swarm of cranium rats communicating telepathically "speaks" as one creature, often referring to itself using the collective pronouns "we" and "us."

When in a swarm, cranium rats could access enhanced psionic abilities similar to spells, implanted by their illithid masters. So long as enough cranium rats existed in a single area (approximately thirty) they could wield these abilities to achieve a variety of effects.

Swarm The Swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny rat. The Swarm can't Regain Hit Points or Gain Temporary Hit Points .

If enough cranium rats come together to form a swarm, they merge their minds into a single intelligence with the accumulated memories of all the swarm ’s constituents. The rats become smarter as a result, and retain their heightened intelligence for as long as the swarm persists.

The CR of a swarm of cranium rats is equal to their collective Int divided by 4 (for swarms of less than 25), or by 2 (for swarms of 25 and above). Psionics (Sp): At Int 7 and above, cranium rats can manifest psionic powers. A swarm has the same number of powers, power points, and attack/defense modes as a psion of a level equal to their ...

Swarm of Cranium Rats [ Nuée de rats-crânes] Medium Swarm of Tiny aberrations, typically Lawful Evil. Armor Class 12 Hit Points 76 (17d8) Speed 30 ft. STR 9 (-1) DEX 14 (+2) CON 10 (+0) INT 15 (+2) WIS 11 (+0) CHA 14 (+2) Damage Resistances bludgeoning, piercing, slashing

2023年4月12日 · Swarm. The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny rat. The swarm can't regain hit points or gain temporary hit points. ACTIONS. Bite. Melee Weapon Attack: +2 to hit, reach 0 ft., one creature in the swarm's space.