{
  "tiers": [
    {
      "groups": [
        {
          "num_to_select": 3,
          "trades": [
            {
              "max_uses": 16,
              "wants": [
                {
              "item": "tm:black_diamond_ingot",
              "quantity": {
                "min": 1,
                "max": 2
                 }
                }
              ],
              "gives": [
            {
              "item": "tm:elucidator",
              "quantity": {
                "min": 1,
                "max": 1
              }
            }
              ]
            },
            {
              "max_uses": 16,
              "wants": [
            {
              "item": "tm:crystallite_ingot",
              "quantity": {
                "min": 2,
                "max": 4
              }
            }
              ],
              "gives": [
            {
              "item": "tm:dark_repulser",
              "quantity": {
                "min": 1,
                "max": 1
              }
                  }
              ]
            },
            {
              "max_uses": 8,
              "wants": [
            {
              "item": "minecraft:iron_ingot",
              "quantity": {
                "min": 2,
                "max": 2
              }
            }
              ],
              "gives": [
            {
              "item": "tm:anneal_blade",
              "quantity": {
                "min": 1,
                "max": 1
              }
            }
          ]
        }

          ]
        }
      ]
    }
  ]
}