{
  "criteria": {
    "requirement": {
      "trigger": "minecraft:player_killed_entity",
      "conditions": {
        "player": [],
        "entity": {
          "type": [
            "minecraft:ghast"
          ],
          "nbt": "{Tags:[\"powerup_ghast\"]}"
        }
      }
    }
  },
  "rewards": {
    "function": "ss:main/powerup/pick_up"
  }
}