{
  "type": "exdeorum:crook",
  "block_predicate": {
    "block": "exdeorum:infested_leaves",
    "state": {
      "fully_infested": "true"
    }
  },
  "chance": 0.01,
  "result": {
    "count": 1,
    "id": "exdeorum:silkworm"
  }
}