Malformed Kraken

{
  "ac": [
    {
      "ac": 17,
      "from": [
        "natural armor"
      ]
    }
  ],
  "cr": "10",
  "hp": {
    "average": 172,
    "formula": "15d12 + 75"
  },
  "cha": 15,
  "con": 20,
  "dex": 11,
  "int": 11,
  "str": 25,
  "wis": 15,
  "name": "Malformed Kraken",
  "page": 239,
  "save": {
    "cha": "+6",
    "con": "+9",
    "int": "+4",
    "str": "+11",
    "wis": "+6"
  },
  "size": [
    "H"
  ],
  "type": "monstrosity",
  "speed": {
    "swim": 40,
    "walk": 20
  },
  "trait": [
    {
      "name": "Amphibious",
      "entries": [
        "The kraken can breathe air and water."
      ]
    },
    {
      "name": "Siege Monster",
      "entries": [
        "The kraken deals double damage to objects and structures."
      ]
    }
  ],
  "__prop": "monster",
  "action": [
    {
      "name": "Multiattack",
      "entries": [
        "The kraken makes three tentacle attacks. One of them can be replaced with a bite attack, and any of them can be replaced with Fling."
      ]
    },
    {
      "name": "Bite",
      "entries": [
        "{@atk mw} {@hit 11} to hit, reach 5 ft., one target. {@h}16 ({@damage 2d8 + 7}) piercing damage."
      ]
    },
    {
      "name": "Tentacle",
      "entries": [
        "{@atk mw} {@hit 11} to hit, reach 20 ft., one target. {@h}14 ({@damage 2d6 + 7}) bludgeoning damage, and the target is {@condition grappled} (escape {@dc 16}). Until this grapple ends, the target is {@condition restrained}. The kraken has ten tentacles, each of which can grapple one target."
      ]
    },
    {
      "name": "Fling",
      "entries": [
        "One Medium or smaller object held or creature {@condition grappled} by the kraken's tentacles is thrown up to 60 feet in a random direction and knocked {@condition prone}. If a thrown target strikes a solid surface, the target takes 3 ({@damage 1d6}) bludgeoning damage for every 10 feet it was thrown. If the target is thrown at another creature, that creature must succeed on a {@dc 16} Dexterity saving throw or take the same damage and be knocked {@condition prone}."
      ]
    },
    {
      "name": "Lightning Storm",
      "entries": [
        "The kraken creates three bolts of lightning, each of which can strike a target the kraken can see within 150 feet of it. A target must make a {@dc 16} Dexterity saving throw, taking 16 ({@damage 3d10}) lightning damage on a failed save, or half as much damage on a successful one."
      ]
    }
  ],
  "immune": [
    "lightning"
  ],
  "resist": [
    {
      "cond": true,
      "note": "from nonmagical attacks",
      "resist": [
        "bludgeoning",
        "piercing",
        "slashing"
      ]
    }
  ],
  "senses": [
    "truesight 60 ft."
  ],
  "source": "TftYP",
  "passive": 12,
  "hasFluff": true,
  "hasToken": true,
  "miscTags": [
    "MW",
    "RCH"
  ],
  "alignment": [
    "C",
    "E"
  ],
  "languages": [
    "understands Common but can't speak",
    "telepathy 60 ft."
  ],
  "senseTags": [
    "U"
  ],
  "traitTags": [
    "Amphibious",
    "Siege Monster"
  ],
  "actionTags": [
    "Multiattack",
    "Tentacles"
  ],
  "damageTags": [
    "B",
    "L",
    "P"
  ],
  "languageTags": [
    "C",
    "CS",
    "TP"
  ],
  "conditionImmune": [
    "frightened",
    "paralyzed"
  ],
  "conditionInflict": [
    "grappled",
    "prone",
    "restrained"
  ],
  "referenceSources": [
    "TftYP-AtG",
    "TftYP-DiT",
    "TftYP-TFoF",
    "TftYP-THSoT",
    "TftYP-ToH",
    "TftYP-TSC",
    "TftYP-WPM"
  ],
  "savingThrowForced": [
    "dexterity"
  ]
}