Xy Never, Ever Marks the Spot.

Raw Blizzard Data

{
  "_links": {
    "self": {
      "href": "https://us.api.blizzard.com/data/wow/achievement/15398?namespace=static-12.1.0_68914-us"
    }
  },
  "id": 15398,
  "category": {
    "key": {
      "href": "https://us.api.blizzard.com/data/wow/achievement-category/15438?namespace=static-12.1.0_68914-us"
    },
    "name": "Shadowlands Raid",
    "id": 15438
  },
  "name": "Xy Never, Ever Marks the Spot.",
  "description": "Defeat Xy'mox with all players under the effects of pilfered artifacts in the Sepulcher of the First Ones on Normal difficulty or higher.",
  "points": 10,
  "is_account_wide": false,
  "criteria": {
    "id": 94562,
    "description": "Defeat Xy'mox with all players under the effects of pilfered artifacts in the Sepulcher of the First Ones on Normal difficulty or higher.",
    "amount": 0,
    "operator": {
      "type": "AND",
      "name": "Complete All"
    },
    "child_criteria": [
      {
        "id": 94563,
        "description": "Xy'mox defeated while all players are affected by Pilfered Relics.",
        "amount": 1
      }
    ]
  },
  "media": {
    "key": {
      "href": "https://us.api.blizzard.com/data/wow/media/achievement/15398?namespace=static-12.1.0_68914-us"
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  },
  "display_order": 73
}