{
    "type": "mcjtylib:copy_nbt",
    "pattern": ["nOs", "OMO", "sOn"],
    "key": {
        "M": {
            "item": "rftoolsbuilder:shield_block3"
        },
        "n": {
            "item": "minecraft:nether_star"
        },
        "s": {
            "tag": "forge:gems/dimensional"
        },
        "O": {
            "item": "minecraft:obsidian"
        }
    },
    "result": {
        "item": "rftoolsbuilder:shield_block4"
    }
}