A squirming, roiling mass of squeaking rats draws closer, teeth flashing and claws scratching everything in its path.
AC 14, touch 14, flat-footed 12 (+2 Dex, +2 size)
Str 2, Dex 15, Con 13, Int 2, Wis 13, Cha 2
Organization solitary, pack (2–5 swarms), or infestation (6–12 swarms)
A rat swarm typically consists of a biting, roiling mass of hundreds of disease-ridden rats driven to uncharacteristic heights of aggression by fantastic and overwhelming hunger. In such numbers, they become voracious hunters, capable of killing a full-grown human with hundreds of bites. Rat swarms are often found in the sewers of large human settlements.
Rat swarms surround and attack any warm-blooded prey in their path.