Blue Dragon

{
  "name": "Blue Dragon",
  "page": 50,
  "__prop": "legendaryGroup",
  "source": "XMM",
  "regionalEffects": [
    "The region containing an adult or ancient blue dragon's lair is changed by its presence, creating the following effects:",
    {
      "type": "list",
      "items": [
        {
          "name": "Sinkholes",
          "type": "item",
          "entries": [
            "Sinkholes form more frequently in the area within 1 mile of the lair. Whenever a creature in that area other than the dragon and its allies finishes a {@variantrule Long Rest|XPHB}, roll {@dice 1d20}. On a 1, a sinkhole opens beneath the creature, and the creature must succeed on a {@dc 15} Dexterity saving throw or fall {@dice 2d4 × 10} feet into the sinkhole."
          ]
        },
        {
          "name": "Spiteful Storms",
          "type": "item",
          "entries": [
            "Dust devils and thunderstorms rage within 1 mile of the lair. The area is {@variantrule Lightly Obscured|XPHB}."
          ]
        }
      ],
      "style": "list-hang-notitle"
    },
    "If the dragon dies or moves its lair elsewhere, these effects end immediately."
  ]
}