b'Swarm of Undead Rats \n'b'  Family:   Swarm  \n'b'  Medium   swarm of Tiny undead ,  chaotic evil  \n'b'  Armor Class  10 \n'b' Hit Points  24 (7d8 \xe2\x80\x93 7) \n'b' Speed  30 ft.\n'b' STATS STR: 9 (\xe2\x80\x931) DEX:  11 (+0)  CON:  9 (\xe2\x80\x931)  INT:  2 (\xe2\x80\x934)  WIS:  10 (+0)  CHA:  3 (\xe2\x80\x934)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'\n'b'  Damage Resistances  bludgeoning, piercing, slashing \n'b' Damage Immunities  poison \n'b' Condition Immunities   charmed ,  frightened ,  grappled ,  paralyzed ,  petrified ,  poisoned ,  prone ,  restrained ,  stunned  \n'b' Senses   darkvision  30 ft., passive  Perception  10 \n'b' Languages  \xe2\x80\x94 \n'b' Challenge  1/4 (50 XP) \n'b' SPECIAL TRAITS \n'b'\n'b'  Keen Smell . The swarm has advantage on  Wisdom  ( Perception ) checks that rely on smell. \n'b'  Swarm . The undead  rat swarm  can occupy another creature\xe2\x80\x99s space and vice versa, and the swarm can move through any opening large enough for a Tiny rat. The swarm can\xe2\x80\x99t regain  hit points  or gain  temporary hit points . \n'b'\n'b' ACTIONS \n'b'\n'b'  Bites .  Melee Weapon Attack : +2 to hit, reach 0 ft., one creature in the swarm\xe2\x80\x99s space.  Hit : 7 (2d6) piercing damage, or 3 (1d6) piercing damage if the swarm has half of its  hit points  or fewer. \n'b'\n'b' ABOUT \n'b' An swarm of undead rats consists of hundreds of undead rodents that squirm and writhe as if alive, until you stop to look at their broken bodies and lifeless eyes. Their insides ooze through their fur, making them a disgusting mass to deal with.'