{
    "description": {"text":"Return","color":"red"},
    "anvil_cost": 5,
    "max_level": 1,
    "weight": 1,
    "min_cost": {
        "base": 25,
        "per_level_above_first":10
    },
    "max_cost": {
        "base": 25,
        "per_level_above_first":12
    },
    "supported_items": "#minecraft:pickaxes",
    "primary_items": [],
    "slots": [
        "mainhand"
    ],
    "exclusive_set": [
        "minecraft:mending",
        "minecraft:fortune",
        "minecraft:unbreaking",
        "minecraft:silk_touch",
        "minecraft:efficiency"
    ],
    "effects": {
        "minecraft:attributes": [
            {
                "amount": 256,
                "attribute": "block_break_speed",
                "id": "block_break_speed",
                "operation": "add_value"
            }
        ]
    }
}