b'Cat Swarm \n'b'  Family:   Felines  \n'b' The silent rippling muscles of the clowder slip by unnoticed until nothing remains but gnawed bones and fat stomachs. \n'b'  Huge   swarm  of Tiny beasts,  unaligned  \n'b'  Armor Class  14  Hit Points  55 (10d10)  Speed  40 ft.\n'b' STATS STR: 9 (-1) DEX:  18 (+4)  CON:  10 (+0)  INT:  2 (-4)  WIS:  14 (+2)  CHA:  3 (-4)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'     Skills   Stealth  +6  Damage Resistances  bludgeoning, piercing, slashing  Condition Immunities   charmed ,  frightened ,  paralyzed ,  petrified ,  prone ,  restrained ,  stunned   Senses   darkvision  30 ft., passive  Perception  12  Languages  \xe2\x80\x93  Challenge  4 (1,100 XP) \n'b' Special Traits \n'b'   Feline Terror . Each creature in the swarm must succeed on a DC 12  Wisdom  saving throw or fall  prone  and become  frightened  for 1 minute. A creature can repeat the saving throw at the end of each of its turns. If a creature\xe2\x80\x99s saving throw is successful or the effect ends for it, the creature is immune to the swarm\xe2\x80\x99s Feline Terror for the next 24 hours. \n'b'  Keen Senses . The swarm has advantage on  Wisdom  ( Perception ) checks that rely on sight, hearing, or smell. \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 cat. The swarm can\xe2\x80\x99t regain  hp  or gain  temporary hp . \n'b'  Actions \n'b'   Bites .  Melee Weapon Attack : +6 to hit, reach 0 ft., up to two creatures in the swarm\xe2\x80\x99s space.  Hit : 14 (4d6) piercing damage, or 7 (2d6) piercing damage if the swarm has half of its  hit points  or fewer. \n'b'  About \n'b'  A Convergence of Felines . Seeing a group of cats (called a clowder) slinking down an alley barely registers in the minds of busy city-dwellers. Pests to some, pets to others, and invisible to most, the domestic housecat does not seem much of a threat.\xc2\xa0However, any beast with tooth and claw poses a threat on some level. And hundreds of those beasts, inspired and working together, can be a terrifying prospect. \n'b'  The Cats and the Weather . The first sign a victim sees is cloudy, violent weather. The bluest, clearest daytime skies or the finest moonlit nights become stormy nightmares when the cats are on the prowl. \n'b'  A Hissing, Seething Mass . Through the darkness provided by the suddenly darkened skies, the cats come together, some from their comfortable homes and others from their wild dens. The call spares no feline, and all types of cats join together to form the swarm. The victims often do not see the cats until it is too late. The only thing the victims notice is a single hiss that rises up from the mass of fur and death.'