{
  "id": "card.example.lantern",
  "name": "Lantern",
  "type": "Field",
  "cost": 1,
  "countdown": 3,
  "tags": ["field", "supply", "countdown"],
  "effects": [],
  "triggers": [
    {
      "when": "TurnStart",
      "effects": [{ "op": "GenerateEnergy", "amount": 1 }]
    }
  ]
}