{
  "type": "lucky:group",
  "luck": -1,
  "outcomes": [
    {
      "type": "lucky:difficulty",
      "difficulty": "hard"
    },
    {
      "type": "lucky:entity",
      "entity_type": "minecraft:evoker"
    },
    {
      "type": "lucky:entity",
      "entity_type": "minecraft:vex",
      "count": 4,
      "pos": {
        "type": "lucky:random_in_shape",
        "center": ["{blockX}-1", "{blockY}-1", "{blockZ}-1"],
        "shape": {
          "type": "lucky:sphere",
          "size": [1, 2, 1]
        }
      },
      "reinit": true
    }
  ]
}