b'Horned Serpent \n'b'  Large   monstrosity ,  unaligned  \n'b'  Armor Class  18 (natural armor)  Hit Points  210 (20d10 + 100)  Speed  40 ft., swim 40 ft.\n'b' STATS STR: 22 (+6) DEX:  16 (+3)  CON:  20 (+5)  INT:  4 (-3)  WIS:  14 (+2)  CHA:  16 (+3)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'\n'b'  Saving Throws   Dexterity  +7,  Wisdom  +6  Skills   Perception  +6,  Stealth  +7  Damage Resistances  fire  Damage Immunities  necrotic, poison  Condition Immunities   poisoned   Senses   darkvision  60 ft., passive  Perception  16  Languages  \xe2\x80\x93  Challenge  12 (8,400 XP) \n'b' Special Traits \n'b'\n'b'  Amphibious . The horned serpent can breathe air and water. \n'b'  Corpse Cough . Those who fail a saving throw against the horned serpent\xe2\x80\x99s Gem Gaze or bite  attack  become infected with the corpse cough disease. The infected creature can\xe2\x80\x99t benefit from short or  long rest s due to a constant, wet cough. The infected creature must succeed on a DC 17  Constitution  saving throw each day or take 18 (4d8) necrotic damage. The target\xe2\x80\x99s  hp  maximum is reduced by an amount equal to the necrotic damage taken. The target dies if this effect reduces its  hp  maximum to 0. The reduction lasts until the target is cured of the disease with a  greater restoration  spell or similar magic. If the infected creature comes into physical contact with a blood relative before the disease is cured, the relative must succeed on a DC 17  Constitution  saving throw or also become infected with the disease. The blood relative is afflicted with a constant, wet cough within hours of infection, but the disease\xe2\x80\x99s full effects don\xe2\x80\x99t manifest until 1d4 days later. Corpse cough is so named due to the smell of the cough as the infected creature\xe2\x80\x99s lungs become necrotic. \n'b'  Poisonous Aura . At the start of each of the horned serpent\xe2\x80\x99s turns, each creature within 20 feet of it must make a DC 17  Constitution  saving throw, taking 18 (4d8) poison damage on a failed save, or half as much damage on a successful one. \n'b'  Shielded Mind . The horned serpent is immune to  scrying  and to any effect that would sense its emotions, read its thoughts, or detect its location. \n'b'\n'b' Actions \n'b'\n'b'  Multiattack . The horned serpent makes one gore  attack  and one bite  attack . \n'b'  Gore .  Melee Weapon Attack : +10 to hit, reach 10 ft., one target.  Hit : 19 (4d6 + 5) piercing damage. \n'b'  Bite .  Melee Weapon Attack : +10 to hit, reach 10 ft., one target.  Hit : 21 (3d10 + 5) piercing damage, and the target must succeed on a DC 17  Constitution  saving throw or become infected with the corpse cough disease (see the Corpse Cough trait). \n'b'  Gem Gaze (Recharge 5-6) . The horned serpent\xe2\x80\x99s gem flashes, bathing a 30-foot cone in iridescent light. Each creature in the area must make a DC 17  Constitution  saving throw. On a failed save, a creature takes 35 (10d6) radiant damage and is infected with the corpse cough disease (see the Corpse Cough trait). On a success, a creature takes half the damage and isn\xe2\x80\x99t infected with the disease. Gem Gaze has no effect on constructs and undead. \n'b'\n'b' About \n'b' This huge snake has a pair of wide horns, like those of a bull, and a smooth, opaque, red, ovoid stone between its eyes that gives off a faint glow. \n'b'  Plague Bearers . Known to be a bringer of magical plagues, horned serpents are also sought after for their horns and the strange stones between their eyes, both believed to have powerful curative properties. \n'b'  Wilderness Wanderer . Horned serpents travel between lakes, ponds, and deep rivers, never staying in one area for more than a few seasons. Though they live primarily in the water, they venture onto the land to hunt, where the sweetness of their poisonous scent draws game to them. \n'b'  Grisly Signs . The presence of a horned serpent is most often detected by an area of dead creatures,  poisoned  but otherwise untouched.'