{
    "type": "minecraft:delta_feature",
    "config": {
        "contents": {
            "Name": "minecraft:crimson_nylium"
        },
        "rim": {
            "Name": "minecraft:nether_wart_block"
        },
        "size": {
            "type": "minecraft:uniform",
            "min_inclusive": 6,
            "max_inclusive": 7
        },
        "rim_size": {
            "type": "minecraft:uniform",
            "min_inclusive": 0,
            "max_inclusive": 6
        }
    }
}