{
  "id": "undead",
  "mobs": [
    {
      "weight": 1000,
      "id": "minecraft:skeleton"
    },
    {
      "weight": 1000,
      "id": "minecraft:zombie"
    },
    {
      "weight": 200,
      "id": "minecraft:stray"
    }
  ],
  "bosses": [
    {
      "weight": 1000,
      "id": "minecraft:wither_skeleton"
    }
  ]
}