[
    {
        "weight": 1,
        "item": {
        "id": "the_vault:rune",
        "nbt": "{entries:[{pool:\"the_vault:vault/rooms/challenge/crystal_caves\", count:1}, {type:\"COMMON\", count:{type:\"uniform\", min:4, max:14}}]}"
        }
    },
    {
        "weight": 1,
        "item": {
        "id": "the_vault:rune",
        "nbt": "{entries:[{pool:\"the_vault:vault/rooms/omega/cube\", count:1}, {type:\"COMMON\", count:{type:\"uniform\", min:4, max:14}}]}"
        }
    }
]