White Dragon

{
  "name": "White Dragon",
  "page": 330,
  "__prop": "legendaryGroup",
  "source": "XMM",
  "regionalEffects": [
    "The region containing an adult or ancient white dragon's lair is affected by its presence, creating the following effects:",
    {
      "type": "list",
      "items": [
        {
          "name": "Frigid Cold",
          "type": "item",
          "entries": [
            "The area within 1 mile of the lair is an area of {@hazard extreme cold|XDMG}. Any water in that area is {@hazard frigid water|XDMG}. See the {@book Dungeon Master's Guide|DMG} for rules on extreme cold and frigid water."
          ]
        },
        {
          "name": "Glacial Gloom",
          "type": "item",
          "entries": [
            "The area within 1 mile of the lair is {@variantrule Lightly Obscured|XPHB} by chilly fog. Whenever a creature other than the dragon or one of its allies finishes a {@variantrule Long Rest|XPHB} in that area, that creature must succeed on a {@dc 15} Constitution saving throw or have its {@variantrule Speed|XPHB} reduced by 10 feet for 1 hour."
          ]
        }
      ],
      "style": "list-hang-notitle"
    },
    "If the dragon dies or moves its lair elsewhere, these effects end immediately."
  ]
}