{
    "display": {
      "icon": {
        "id": "minecraft:blue_ice"
      },
      "title": "Did Christmas Come Early?",
      "description": "Find your first Legendary Ice Treasure!",
      "frame": "challenge",
      "show_toast": true,
      "announce_to_chat": true,
      "hidden": false
    },
    "parent": "mt:treasure_advancements/first_epic_ice_treasure",
    "criteria": {
      "obtainchest": {
        "trigger": "minecraft:player_generates_container_loot",
        "conditions": {
          "loot_table": "mt:chests/ice/legendary"}
    }
  }
}
  