Beholder

{
  "name": "Beholder",
  "page": 35,
  "__prop": "legendaryGroup",
  "source": "XMM",
  "regionalEffects": [
    "The region containing a beholder's lair is twisted by its presence, creating the following effects:",
    {
      "type": "list",
      "items": [
        {
          "name": "Scopophobia",
          "type": "item",
          "entries": [
            "Creatures within 1 mile of the lair feel as if they're being watched. Any creature (excluding the beholder and its allies) that finishes a {@variantrule Short Rest|XPHB} while within 1 mile of the lair must succeed on a {@dc 13} Wisdom saving throw or gain no benefit from that rest."
          ]
        },
        {
          "name": "Warping Terrain",
          "type": "item",
          "entries": [
            "Minor warps in reality occur near the lair; any creature (excluding the beholder) within 1 mile of the lair that makes a {@variantrule D20 Test|XPHB} and rolls a 1 has the {@condition Prone|XPHB} condition."
          ]
        }
      ],
      "style": "list-hang-notitle"
    },
    "If the beholder dies or moves its lair elsewhere, these effects end immediately."
  ]
}