b'Swarm, Bats \n'b'  Family:   Bat  \n'b'  Medium   swarm  of Tiny beasts,  unaligned  \n'b'  Armor Class  12  Hit Points  22 (5d8)  Speed  0 ft., fly 30 ft.\n'b' STATS STR: 5 (-3) DEX:  15 (+2)  CON:  10 (+0)  INT:  2 (-4)  WIS:  12 (+1)  CHA:  4 (-3)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'     Damage Resistances  bludgeoning, piercing, slashing  Condition Immunities   charmed ,  frightened ,  grappled ,  paralyzed ,  petrified , prone,  restrained ,  stunned   Senses   blindsight  60 ft., passive Perception 11  Languages  \xe2\x80\x93  Challenge  1/4 (50 XP) \n'b' Special Traits \n'b'   Echolocation : The swarm can\xe2\x80\x99t use its  blindsight  while  deafened . \n'b'  Keen Hearing : The swarm has advantage on  Wisdom  (Perception) checks that rely on hearing. \n'b'  Swarm : The 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 bat. The swarm can\xe2\x80\x99t regain hit points or gain temporary hit points. \n'b'  Actions \n'b'   Bites :  Melee Weapon Attack : +4 to hit, reach 0 ft., one creature in the swarm\xe2\x80\x99s space.  Hit : 5 (2d4) piercing damage, or 2 (1d4) piercing damage if the swarm has half of its hit points or fewer. \n'b'  About \n'b' Hundreds of high-pitched squeaks fill the air as a mass of small, carnivorous bats surges forth, all of them hungry for blood.'