b'Rat King \n'b'  Medium   humanoid  (human, shapechanger),  chaotic evil  \n'b'  Armor Class  13 in humanoid form, 14 (makeshift armor) in hybrid form  Hit Points  44 (8d8 + 8)  Speed  30 ft. \n'b'    Str \n'b' Dex \n'b' Con \n'b' Int \n'b' Wis \n'b' Cha \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'\n'b'     Skills   Perception  +3,  Stealth  +5,  Survival  +3  Damage Immunities  bludgeoning, piercing, and slashing damage from nonmagical weapons that aren\xe2\x80\x99t silvered  Senses   darkvision  60 ft., passive  Perception  13  Languages  Common and one other (can\xe2\x80\x99t speak in rat form)  Challenge  3 (700 XP) \n'b' Special Traits \n'b'   Keen Smell . The rat king has advantage on  Wisdom  ( Perception ) checks that rely on smell. \n'b'  Shapechanger . The rat king can use its action to  polymorph  into a rat-humanoid hybrid or into a giant rat, or back into its true form, which is humanoid. Its statistics, other than its  size , are the same in each form. Any equipment it is wearing or carrying isn\xe2\x80\x99t transformed. It reverts to its true form if it dies. \n'b'  Sunlight Sensitivity . While in sunlight, the rat king has disadvantage on  attack  rolls, as well as on  Wisdom  ( Perception ) checks that rely on sight. \n'b'  Actions \n'b'   Multiattack (Humanoid or Hybrid Form Only) . The rat king makes three attacks, only one of which can be a bite. \n'b'  Bite (Hybrid Form Only) .  Melee Weapon Attack : +5 to hit, reach 5 ft., one target.  Hit : 9 (2d6 + 2) piercing damage. If the target is a humanoid, it must succeed on a DC 12  Constitution  saving throw or be cursed with wererat lycanthropy. \n'b'  Longsword (Humanoid or Hybrid Form Only) .  Melee Weapon Attack : +5 to hit, reach 5 ft., one target.  Hit : 7 (1d10 + 2) slashing damage. \n'b'  Summon Rats (1/day) . The rat king can summon a swarm of rats. They appear in 1d4 rounds and obey the rat king\xe2\x80\x99s commands. \n'b'  About \n'b' Shadows dance in torchlight as a party of adventurers explores the sewers. Then an odd creature comes into view, it has a strange pointed nose and a long tail. These heroes have wandered into the lair of the Rat King. It unsheathes a glistening longsword and turns towards the intruders. \n'b'  Underworld Boss . One of the leaders in the underground world of the sewers is this strange  lycanthrope . \n'b' He commands a legion of wererats, many giant rats, and swarms of rats. \n'b'  Lycanthrope Leader . Wererats are extremely loyal to their king and will even sacrifice themselves for him. He is incredibly lazy and prefers to have his minions do his dirty work for him. This lycanthrope leader has no trouble sending his henchmen on dangerous missions. \n'b'  Big Dreams . The rat king dreams of leading a rebellion against the surface dwellers. He has other lycanthrope allies in the city who are ready to fight, namely several werewolves and werebears.'