{
    "description": {
      "translate": "",
      "fallback": "Axe Mastery"
    },
    "supported_items": "#minecraft:chest_armor",
    "weight": 3,
    "max_level": 1,
    "min_cost": {
      "base": 999999,
      "per_level_above_first": 10
    },
    "max_cost": {
      "base": 999999,
      "per_level_above_first": 10
    },
    "anvil_cost": 4,
    "slots": [
      "chest"
    ],
    "effects": {
      "minecraft:location_changed": [
        {
          "requirements": [
            {
              "condition": "minecraft:entity_properties",
              "entity": "this",
              "predicate": {
                "equipment": {
                  "mainhand": {
                    "items": "#minecraft:axes"
                  }
                }
              }
            }
          ],
          "effect": {
            "type": "minecraft:attribute",
            "attribute": "minecraft:attack_damage",
            "id": "dark_forest_chestplate",
            "amount": 0.25,
            "operation": "add_multiplied_total"
          }
        }
      ]
    }
  }