Styx Dragon

{
  "ac": [
    {
      "ac": 17,
      "from": [
        "natural armor"
      ]
    }
  ],
  "cr": "20",
  "hp": {
    "average": 296,
    "formula": "16d20 + 128"
  },
  "cha": 19,
  "con": 26,
  "dex": 14,
  "int": 19,
  "str": 27,
  "wis": 20,
  "name": "Styx Dragon",
  "page": 252,
  "save": {
    "cha": "+10",
    "con": "+14",
    "dex": "+8",
    "wis": "+11"
  },
  "size": [
    "G"
  ],
  "type": "dragon",
  "skill": {
    "insight": "+11",
    "survival": "+17",
    "athletics": "+21",
    "perception": "+11"
  },
  "speed": {
    "swim": 60,
    "walk": 30,
    "burrow": 20
  },
  "trait": [
    {
      "name": "Amphibious",
      "entries": [
        "The dragon can breathe air and water."
      ]
    },
    {
      "name": "Stygian Wasting",
      "entries": [
        "Creatures afflicted with this disease are incapable of regaining hit points in any way until the disease is cured. Additionally, as their flesh starts to rot, a creature with this disease takes 36 ({@damage 8d8}) necrotic damage after each long rest they finish."
      ]
    },
    {
      "name": "Styx Dweller",
      "entries": [
        "The dragon is immune to all negative effects from the River Styx."
      ]
    }
  ],
  "__prop": "monster",
  "action": [
    {
      "name": "Multiattack",
      "entries": [
        "The dragon can use its Frightful Presence. It then makes three attacks using its Bite, Tail, or a combination of the two. It can replace one of the attacks with Constrict."
      ]
    },
    {
      "name": "Bite",
      "entries": [
        "{@atk mw} {@hit 14} to hit, reach 5 ft., one target. {@h}19 ({@damage 2d10 + 8}) piercing damage plus 7 ({@damage 2d6}) poison damage, and the target must make a {@dc 19} Constitution saving throw. On a failed save, the target contracts Stygian Wasting."
      ]
    },
    {
      "name": "Tail",
      "entries": [
        "{@atk mw} {@hit 14} to hit, reach 10 ft., one target. {@h}15 ({@damage 2d6 + 8}) bludgeoning damage. If the target is a Large or smaller creature, it has the {@condition grappled} condition (escape {@dc 22}). The dragon can't make a Tail attack while a creature is {@condition grappled} in this way."
      ]
    },
    {
      "name": "Constrict",
      "entries": [
        "The dragon tightens its grip on a creature {@condition grappled} by its tail. The creature takes 27 ({@damage 3d12 + 8}) bludgeoning damage, has the {@condition restrained} condition until the start of the dragon's next turn, and must make a {@dc 19} Constitution saving throw. On a failed save, the target contracts Stygian Wasting."
      ]
    },
    {
      "name": "Frightful Presence",
      "entries": [
        "Each creature of the dragon's choice that is within 120 feet of the dragon must succeed on a {@dc 18} Wisdom saving throw or have the {@condition frightened} condition for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the dragon's Frightful Presence for the next 24 hours."
      ]
    },
    {
      "name": "Stygian Breath {@recharge 5}",
      "entries": [
        "The dragon exhales poisonous Styx water in a 60-foot-long, 10-foot-wide line. Each creature in that line must make a {@dc 19} Dexterity saving throw, taking 54 ({@damage 12d8}) poison damage on a failed save, or half as much on a successful one. Creatures that fail the save contract Stygian Wasting."
      ]
    }
  ],
  "immune": [
    "cold",
    "poison"
  ],
  "resist": [
    {
      "special": "damage from spells"
    }
  ],
  "senses": [
    "blindsight 120 ft."
  ],
  "source": "CoA",
  "passive": 21,
  "hasFluff": true,
  "hasToken": true,
  "miscTags": [
    "DIS",
    "MW",
    "RCH"
  ],
  "alignment": [
    "C",
    "E"
  ],
  "languages": [
    "Draconic",
    "Infernal"
  ],
  "legendary": [
    {
      "name": "Detect",
      "entries": [
        "The dragon makes a Wisdom ({@skill Perception}) check."
      ]
    },
    {
      "name": "Tail Attack",
      "entries": [
        "The dragon makes a Tail attack. If a creature is already {@condition grappled}, the dragon may use Constrict instead."
      ]
    },
    {
      "name": "Death Throw (Costs 3 Actions)",
      "entries": [
        "If the dragon has successfully {@condition restrained} a creature with the Constrict ability, it may throw them up to 100 feet away. When it lands, the creature takes 21 ({@damage 6d6}) bludgeoning damage and must make a {@dc 18} Constitution saving throw. On a failed save, the creature has the {@condition unconscious} condition for 10 minutes."
      ]
    }
  ],
  "senseTags": [
    "B"
  ],
  "traitTags": [
    "Amphibious"
  ],
  "actionTags": [
    "Breath Weapon",
    "Frightful Presence",
    "Multiattack"
  ],
  "damageTags": [
    "B",
    "I",
    "N",
    "P"
  ],
  "languageTags": [
    "DR",
    "I"
  ],
  "hasFluffImages": true,
  "conditionImmune": [
    "blinded",
    "poisoned"
  ],
  "conditionInflict": [
    "grappled",
    "unconscious"
  ],
  "savingThrowForced": [
    "constitution",
    "dexterity",
    "wisdom"
  ]
}