{
  "chancecubes:anti_slab": {
    "chance": -15,
    "Area": [
      {
        "xSize": 3,
        "ySize": 1,
        "zSize": 3,
        "block": "minecraft:obsidian",
        "xOff": -1,
        "yOff": 2,
        "zOff": -1,
        "falling": false,
        "delay": 0,
        "causesUpdate": false,
        "relativeToPlayer": true
      }
    ]
  }
}