{
  "bands": [
    {
      "id": "act_i_3_19",
      "label": "Act I / level 3-19",
      "sets": [
        "ghastly",
        "runemaster",
        "clovenhoof",
        "true_north",
        "cabalist",
        "railforged",
        "wanderlust"
      ]
    },
    {
      "id": "early_mid_17_35",
      "label": "Early-mid / level 17-35",
      "sets": [
        "regent",
        "estheria",
        "argonaut",
        "necros",
        "badlands",
        "grundigs_bastion",
        "ezrohir",
        "zeraphi_alchemy",
        "janissary",
        "wazir",
        "merciless",
        "spellweaver",
        "machine_forged",
        "plainslord"
      ]
    },
    {
      "id": "midgame_33_62",
      "label": "Midgame / level 33-62",
      "sets": [
        "ironlord",
        "wildwood",
        "exorcist",
        "dwarfking",
        "sentinel",
        "highridge",
        "leone",
        "magma_fused_iron",
        "obscure_tools",
        "incubus"
      ]
    },
    {
      "id": "ng_50_85",
      "label": "NG+ / level 50-85",
      "sets": [
        "feral",
        "embercraft",
        "forgecrafted",
        "liberation",
        "savage",
        "emberweave",
        "cornerstone",
        "labarinto",
        "bloodbath",
        "corbucci",
        "the_grand_design",
        "winters_reach",
        "celestial"
      ]
    },
    {
      "id": "endgame_88_99",
      "label": "Endgame / level 88-99",
      "sets": [
        "bloodsteam",
        "aristocrat",
        "inquisitor",
        "dragonrift",
        "valkyrie",
        "harbinger",
        "transcendent",
        "mondons_vestment",
        "unearthly"
      ]
    }
  ],
  "notes": [
    "Sets are primarily level-specific rather than purely area-specific.",
    "The page 17 diagram of the PDF visualizes progression and replacement from Act I through endgame.",
    "Rare set piece stats and sockets should not be assumed static."
  ]
}