b'Dunefish Swarm \n'b'  Large   swarm  of tiny beasts,  unaligned\n'b' STATS STR: 6 (-2) DEX:  16 (+3)  CON:  10 (+0)  INT:  3 (-4)  WIS:  10 (+0)  CHA:  1 (-5)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'     Armor Class  13  Hit Points  38 (7d10)  Speed  0 ft., burrow 40 ft.  Senses  passive  Perception  10  Languages  \xe2\x80\x93  Challenge  2 (450 XP) \n'b' Special Traits \n'b'   Blood Frenzy . The swarm has advantage on  melee attack  rolls against any creature that doesn\xe2\x80\x99t have all its  hit points . \n'b'  Sand Swimmers . Dunefish can swim through sand as fish swim through the water, but they cannot move through solid rock or compacted dirt. They are able to breathe while sand swimming. They can use a bonus action to  Dash  as long as they move in a straight line. \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 reptile. The swarm can\xe2\x80\x99t regain  hit points  or gain  temporary hit points . \n'b'  Actions \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 of its  hit points  or fewer. \n'b'  Tactics \n'b' Dunefish swim just below the surface of the sand, causing characteristic ripples that might warn of their approach with a successful DC 18  Wisdom  ( Survival ) check. Once they find prey, they surround it and attack relentlessly until they are done feeding. They ignore any treasure and move on quickly to seek another meal. \n'b' Description \n'b' Though they are called fish, these creatures are actually smooth-scaled reptiles with long sinuous tails and short, webbed feet. They \xe2\x80\x98swim\xe2\x80\x99 near the surface of the sand, seeking prey. When they find it, they leap from the surface, attacking with their tiny teeth. \n'b'  Desert Schools . It is uncertain what attracts these tiny reptiles, other than wounded creatures. Some say it is the scent of living beings, others the vibrations that people make as they travel the sand dunes, a few believe it is the fear and desperation of those lost in the desert that draws them. Some nomads follow the schools of dunefish, either hunting them for food (as dangerous as that may be) or to recover the treasures left behind when the dunefish attack a caravan or other group.'