Ancient Blue Dragon

{
  "ac": [
    {
      "ac": 22,
      "from": [
        "natural armor"
      ]
    }
  ],
  "cr": "23",
  "hp": {
    "average": 481,
    "formula": "26d20 + 208"
  },
  "cha": 21,
  "con": 27,
  "dex": 10,
  "int": 18,
  "srd": true,
  "str": 29,
  "wis": 17,
  "name": "Ancient Blue Dragon",
  "page": 90,
  "save": {
    "cha": "+12",
    "con": "+15",
    "dex": "+7",
    "wis": "+10"
  },
  "size": [
    "G"
  ],
  "type": "dragon",
  "group": [
    "Chromatic Dragon"
  ],
  "skill": {
    "stealth": "+7",
    "perception": "+17"
  },
  "speed": {
    "fly": 80,
    "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 can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws."
      ]
    },
    {
      "name": "Bite",
      "entries": [
        "{@atk mw} {@hit 16} to hit, reach 15 ft., one target. {@h}20 ({@damage 2d10 + 9}) piercing damage plus 11 ({@damage 2d10}) lightning damage."
      ]
    },
    {
      "name": "Claw",
      "entries": [
        "{@atk mw} {@hit 16} to hit, reach 10 ft., one target. {@h}16 ({@damage 2d6 + 9}) slashing damage."
      ]
    },
    {
      "name": "Tail",
      "entries": [
        "{@atk mw} {@hit 16} to hit, reach 20 ft., one target. {@h}18 ({@damage 2d8 + 9}) bludgeoning damage."
      ]
    },
    {
      "name": "Frightful Presence",
      "entries": [
        "Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a {@dc 20} Wisdom saving throw or become {@condition frightened} 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": "Lightning Breath {@recharge 5}",
      "entries": [
        "The dragon exhales lightning in a 120-foot line that is 10 feet wide. Each creature in that line must make a {@dc 23} Dexterity saving throw, taking 88 ({@damage 16d10}) lightning damage on a failed save, or half as much damage on a successful one."
      ]
    }
  ],
  "immune": [
    "lightning"
  ],
  "senses": [
    "blindsight 60 ft.",
    "darkvision 120 ft."
  ],
  "source": "MM",
  "passive": 27,
  "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": "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": [
    "L",
    "E"
  ],
  "dragonAge": "ancient",
  "languages": [
    "Common",
    "Draconic"
  ],
  "legendary": [
    {
      "name": "Detect",
      "entries": [
        "The dragon makes a Wisdom ({@skill Perception}) check."
      ]
    },
    {
      "name": "Tail Attack",
      "entries": [
        "The dragon makes a tail attack."
      ]
    },
    {
      "name": "Wing Attack (Costs 2 Actions)",
      "entries": [
        "The dragon beats its wings. Each creature within 15 feet of the dragon must succeed on a {@dc 24} Dexterity saving throw or take 16 ({@damage 2d6 + 9}) bludgeoning damage and be knocked {@condition prone}. The dragon can then fly up to half its flying speed."
      ]
    }
  ],
  "senseTags": [
    "B",
    "SD"
  ],
  "soundClip": {
    "path": "bestiary/blue-dragon.opus",
    "type": "internal"
  },
  "traitTags": [
    "Legendary Resistances"
  ],
  "actionTags": [
    "Breath Weapon",
    "Frightful Presence",
    "Multiattack"
  ],
  "damageTags": [
    "B",
    "L",
    "P",
    "S"
  ],
  "environment": [
    "desert",
    "coastal"
  ],
  "reprintedAs": [
    "Ancient Blue Dragon|XMM"
  ],
  "languageTags": [
    "C",
    "DR"
  ],
  "hasFluffImages": true,
  "legendaryGroup": {
    "name": "Blue Dragon",
    "source": "MM"
  },
  "conditionInflict": [
    "frightened",
    "prone"
  ],
  "referenceSources": [
    "MOT",
    "SKT",
    "TCE"
  ],
  "savingThrowForced": [
    "dexterity",
    "wisdom"
  ],
  "dragonCastingColor": "blue",
  "damageTagsLegendary": [
    "B",
    "L"
  ],
  "conditionInflictLegendary": [
    "blinded",
    "prone",
    "restrained"
  ],
  "savingThrowForcedLegendary": [
    "constitution",
    "dexterity"
  ]
}