{
  "criteria": {
    "requirement": {
      "trigger": "minecraft:inventory_changed",
      "conditions": {
        "items": [
          {
            "items": [
              "biomesoplenty:empyreal_stairs",
              "biomesoplenty:empyreal_slab"
            ]
          }
        ]
      }
    }
  },
  "rewards": {
    "recipes": [
      "superior_stonecutter:biomesoplenty/wood/empyreal/empyreal_trapdoor_1"
    ]
  }
}