Ancient Deep Dragon

{
  "ac": [
    {
      "ac": 20,
      "from": [
        "natural armor"
      ]
    }
  ],
  "cr": {
    "cr": "18",
    "lair": "19"
  },
  "hp": {
    "average": 201,
    "formula": "13d20 + 65"
  },
  "cha": 21,
  "con": 20,
  "dex": 16,
  "int": 19,
  "str": 23,
  "wis": 18,
  "name": "Ancient Deep Dragon",
  "page": 173,
  "save": {
    "cha": "+11",
    "con": "+11",
    "dex": "+9",
    "wis": "+10"
  },
  "size": [
    "G"
  ],
  "type": "dragon",
  "skill": {
    "stealth": "+15",
    "perception": "+10",
    "persuasion": "+17"
  },
  "speed": {
    "fly": 80,
    "swim": 40,
    "walk": 40,
    "burrow": 40
  },
  "trait": [
    {
      "name": "Legendary Resistance (3/Day)",
      "entries": [
        "If the dragon fails a saving throw, it can choose to succeed instead."
      ]
    }
  ],
  "__prop": "monster",
  "action": [
    {
      "name": "Multiattack",
      "entries": [
        "The dragon makes one Bite attack and two Claw attacks."
      ]
    },
    {
      "name": "Bite",
      "entries": [
        "{@atk mw} {@hit 12} to hit, reach 10 ft., one target. {@h}17 ({@damage 2d10 + 6}) piercing damage plus 11 ({@damage 2d10}) poison damage."
      ]
    },
    {
      "name": "Claw",
      "entries": [
        "{@atk mw} {@hit 12} to hit, reach 5 ft., one target. {@h}13 ({@damage 2d6 + 6}) slashing damage."
      ]
    },
    {
      "name": "Tail",
      "entries": [
        "{@atk mw} {@hit 12} to hit, reach 15 ft., one target. {@h}10 ({@damage 1d8 + 6}) bludgeoning damage. If the target is a creature, it must succeed on a {@dc 20} Strength saving throw or be knocked {@condition prone}."
      ]
    },
    {
      "name": "Change Shape",
      "entries": [
        "The dragon magically transforms into any creature that is Medium or Small, while retaining its game statistics (other than its size). This transformation ends if the dragon is reduced to 0 hit points or uses its action to end it."
      ]
    },
    {
      "name": "Nightmare Breath {@recharge 5}",
      "entries": [
        "The dragon exhales a cloud of spores in a 90-foot cone. Each creature in that area must make a {@dc 19} Wisdom saving throw. On a failed save, the creature takes 49 ({@damage 9d10}) psychic damage, and it is {@condition frightened} of the dragon for 1 minute. On a successful save, the creature takes half as much damage with no additional effects. A {@condition frightened} creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success."
      ]
    }
  ],
  "resist": [
    "poison",
    "psychic"
  ],
  "senses": [
    "blindsight 60 ft.",
    "darkvision 300 ft."
  ],
  "source": "FTD",
  "passive": 20,
  "variant": [
    {
      "name": "Customizing Dragons",
      "page": 33,
      "type": "inset",
      "source": "FTD",
      "entries": [
        "You can customize any dragon's stat block to reflect the dragon's unique character. Minor changes such as those below are easy to make and have no impact on a dragon's challenge rating.",
        {
          "name": "Languages",
          "type": "entries",
          "entries": [
            "Most dragons prefer to speak Draconic but learn Common for dealing with allies and minions. But given their high Intelligence and long life span, dragons can easily learn additional languages. You can add languages to a dragon's stat block."
          ]
        },
        {
          "name": "Skills",
          "type": "entries",
          "entries": [
            "Most dragons are proficient in the {@skill Perception} and {@skill Stealth} skills, and many dragons have additional skill proficiencies. As with languages, you can customize a dragon's skill list (even doubling their proficiency bonus with certain skills) to reflect particular interests and activities. You can also give a dragon tool proficiencies, particularly if the dragon spends time in Humanoid form."
          ]
        },
        {
          "name": "Spells",
          "type": "entries",
          "entries": [
            "{@note See the \"Variant: Dragons as Innate Spellcasters\" inset(s), below.}"
          ]
        },
        {
          "name": "Other Traits and Actions",
          "type": "entries",
          "entries": [
            "You can borrow traits and actions from other monsters to add unique flavor to a dragon. Consider these examples:",
            {
              "type": "list",
              "items": [
                {
                  "name": "Change Shape",
                  "type": "item",
                  "entries": [
                    "You can decide that a dragon acquires this action at a younger age than usual, particularly if you want to feature a dragon in Humanoid form in your campaign:",
                    "The dragon magically polymorphs into a humanoid or beast that has a challenge rating no higher than its own, or back into its true form. It reverts to its true form if it dies. Any equipment it is wearing or carrying is absorbed or borne by the new form (the dragon's choice).",
                    "In a new form, the dragon retains its alignment, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics and capabilities are otherwise replaced by those of the new form, except any class features or legendary actions of that form."
                  ]
                },
                {
                  "name": "Flyby",
                  "type": "item",
                  "entries": [
                    "The dragon is an agile flier, quick to fly out of enemies' reach.",
                    "The dragon doesn't provoke an opportunity attack when it flies out of an enemy's reach."
                  ]
                },
                {
                  "name": "Mimicry",
                  "type": "item",
                  "entries": [
                    "Impersonating characters or their allies could be a fun trick for a crafty dragon.",
                    "The dragon can mimic any sounds it has heard, including voices. A creature that hears the sounds can tell they are imitations with a successful {@dc 13} Wisdom ({@skill Insight}) check."
                  ]
                },
                {
                  "name": "Rejuvenation",
                  "type": "item",
                  "entries": [
                    "You might decide that dragons in your campaign, being an essential part of the Material Plane, are nearly impossible to destroy. A dragon's life essence might be preserved in the egg from which it first emerged, in its hoard, or in a cavernous hall at the center of the world, just as a lich's essence is hidden in a phylactery.",
                    "If it has an essence-preserving object, a destroyed dragon gains a new body in {@dice 1d10} days, regaining all its hit points and becoming active again. The new body appears within 5 feet of the object."
                  ]
                },
                {
                  "name": "Special Senses",
                  "type": "item",
                  "entries": [
                    "Most dragons have {@sense blindsight} and {@sense darkvision}. You might upgrade {@sense blindsight} to {@sense truesight}, or you could give a dragon with a burrowing speed {@sense tremorsense|MM}."
                  ]
                },
                {
                  "name": "Tunneler",
                  "type": "item",
                  "entries": [
                    "The dragon can burrow through solid rock at half its burrowing speed and leaves a tunnel in its wake."
                  ]
                }
              ],
              "style": "list-hang-notitle"
            }
          ]
        }
      ]
    }
  ],
  "hasFluff": true,
  "hasToken": true,
  "miscTags": [
    "AOE",
    "MW",
    "RCH"
  ],
  "alignment": [
    "N",
    "E"
  ],
  "dragonAge": "ancient",
  "languages": [
    "Common",
    "Draconic",
    "Undercommon"
  ],
  "legendary": [
    {
      "name": "Commanding Spores",
      "entries": [
        "The dragon releases spores around a creature within 30 feet of it that it can see. The target must succeed on a {@dc 19} Wisdom saving throw or use its reaction to make a melee weapon attack against a random creature within reach. If no creatures are within reach, or the target can't take a reaction, it takes 11 ({@damage 2d10}) psychic damage."
      ]
    },
    {
      "name": "Tail",
      "entries": [
        "The dragon makes one Tail attack."
      ]
    },
    {
      "name": "Spore Salvo (Costs 2 Actions)",
      "entries": [
        "The dragon releases poisonous spores around a creature within 30 feet of it that it can see. The target must succeed on a {@dc 19} Constitution saving throw or take 28 ({@damage 8d6}) poison damage and become {@condition poisoned} for 1 minute. The {@condition poisoned} creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success."
      ]
    }
  ],
  "senseTags": [
    "B",
    "SD"
  ],
  "traitTags": [
    "Legendary Resistances"
  ],
  "actionTags": [
    "Breath Weapon",
    "Multiattack",
    "Shapechanger"
  ],
  "damageTags": [
    "B",
    "I",
    "P",
    "S",
    "Y"
  ],
  "reprintedAs": [
    "Ancient Deep Dragon|FRAiF"
  ],
  "languageTags": [
    "C",
    "DR",
    "U"
  ],
  "hasFluffImages": true,
  "legendaryGroup": {
    "name": "Deep Dragon",
    "source": "FTD"
  },
  "alignmentPrefix": "typically ",
  "conditionImmune": [
    "charmed",
    "frightened",
    "poisoned"
  ],
  "conditionInflict": [
    "frightened",
    "poisoned",
    "prone"
  ],
  "savingThrowForced": [
    "constitution",
    "strength",
    "wisdom"
  ],
  "dragonCastingColor": "deep",
  "damageTagsLegendary": [
    "I"
  ],
  "conditionInflictLegendary": [
    "poisoned"
  ],
  "savingThrowForcedLegendary": [
    "constitution",
    "wisdom"
  ]
}