{
  "biomes": [
    [
      {
        "type": "REGISTRY_NAME",
        "negate": false,
        "value": "minecraft:lush_caves"
      },
       {
        "type": "REGISTRY_NAME",
        "negate": false,
        "value": "biomeswevegone:forgotten_forest"
      }
    ]
  ]
}