MCMinecraft Assets Explorer

{
  "type": "minecraft:random_selector",
  "config": {
    "default": "minecraft:spruce_checked",
    "features": [
      {
        "chance": 0.33333334,
        "feature": "minecraft:pine_checked"
      },
      {
        "chance": 0.0125,
        "feature": "minecraft:fallen_spruce_tree"
      }
    ]
  }
}