Black Dragon

{
  "name": "Black Dragon",
  "page": 40,
  "__prop": "legendaryGroup",
  "source": "XMM",
  "regionalEffects": [
    "The region containing an adult or ancient black dragon's lair is warped by its presence, creating the following effects:",
    {
      "type": "list",
      "items": [
        {
          "name": "Acrid Haze",
          "type": "item",
          "entries": [
            "Odorous and stifling fog covers the area within 1 mile of the lair, rendering that area {@variantrule Lightly Obscured|XPHB}. Travel for creatures other than the dragon and its allies takes twice the usual time in that area."
          ]
        },
        {
          "name": "Foul Water",
          "type": "item",
          "entries": [
            "Water sources within 1 mile of the lair are supernaturally fouled. A creature that drinks such water must succeed on a {@dc 15} Constitution saving throw or have the {@condition Poisoned|XPHB} condition for 1 hour."
          ]
        }
      ],
      "style": "list-hang-notitle"
    },
    "If the dragon dies or moves its lair elsewhere, these effects end immediately."
  ]
}