b'Leech Swarm \n'b'  Medium swarm of Tiny   beasts ,  unaligned  \n'b'  Armor Class  13  Hit Points  32 (5d8 + 10)  Speed  10 ft., swim 40 ft.\n'b' STATS STR: 5 (-3) DEX:  16 (+3)  CON:  15 (+2)  INT:  2 (-4)  WIS:  13 (+1)  CHA:  4 (-3)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'\n'b'  Skills   Perception  +3,  Stealth  +5  Damage Resistances  bludgeoning, piercing, and slashing  Condition Immunities   charmed ,  frightened ,  grappled ,  paralyzed ,  petrified ,  prone ,  restrained ,  stunned   Senses   darkvision  30 ft., passive  Perception  13  Languages  \xe2\x80\x93  Challenge  2 (450 XP) \n'b' SPECIAL TRAITS \n'b'\n'b'  Blood Frenzy . The leech swarm has advantage on  melee attack  rolls against any creature that doesn\xe2\x80\x99t have all its  hp . \n'b'  Blood Sense . The leech swarm can pinpoint, by scent, the location of creatures that aren\xe2\x80\x99t undead or constructs within 30 feet of it. \n'b'  Swarm . The leech 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 leech. The swarm can\xe2\x80\x99t regain  hp  or gain  temporary hp . \n'b'\n'b' ACTIONS \n'b'\n'b'  Bites .  Melee Weapon Attack : +5 to hit, reach 0 ft., one creature in the swarm\xe2\x80\x99s space.  Hit : 14 (4d6) piercing damage, or 7 (2d6) piercing damage if the swarm has half its  hp  or fewer. If the target is a creature other than a construct or an undead, it must succeed on a DC 13  Dexterity  saving throw or lose 2 (1d4)  hp  at the start of each of its turns as leeches attach to it and drain its blood. Any creature can take an action to find and remove the leeches with a successful DC 13  Wisdom  ( Perception ) check. The leeches also detach if the target takes fire damage. \n'b'\n'b' ABOUT \n'b' In swampy areas where food is plentiful, leeches gather together in swarms numbering in the hundreds to hunt prey. When their food supply is diminished, the leeches often turn on each other, effectively destroying the swarm. The scent of blood attracts leech swarms, and they easily locate warm-blooded prey. \n'b' Victims who move out of a leech swarm are not safe, as several leeches remain attached and continue to drain blood until they are removed. These hangers-on are adept at locating hard-to-reach places on their prey as they wriggle into gaps in armor or crawl into boots. Their victims must spend extra time to locate and remove them.'