{
    "format_version": "1.8.0",
    "minecraft:spawn_rules": {
        "description": {
            "identifier": "cc_fairytales:fairy_lava",
            "population_control": "monster"
        },
        "conditions": [
            {
                "minecraft:spawns_underground": {},
                "minecraft:difficulty_filter": {
                    "min": "easy",
                    "max": "hard"
                },
                "minecraft:weight": {
                    "default": 5
                },
                "minecraft:biome_filter": {
                    "test": "has_biome_tag",
                    "operator": "==",
                    "value": "nether"
                },
                "minecraft:density_limit": {
                    "surface": 0,
                    "underground": 1
                }
            }
        ]
    }
}