Focused Critical

{
  "name": "Focused Critical",
  "__prop": "feat",
  "source": "ValdaPlayerPack",
  "ability": [
    {
      "choose": {
        "from": [
          "str",
          "dex"
        ]
      }
    }
  ],
  "entries": [
    "You gain the following benefits.",
    {
      "name": "Improved Critical",
      "type": "entries",
      "entries": [
        "Your attack rolls with weapons and {@variantrule Unarmed Strike|XPHB|Unarmed Strikes} can score a {@variantrule Critical Hit|XPHB} on a roll of 19 or 20 on the {@dice d20}."
      ]
    }
  ],
  "category": "G",
  "prerequisite": [
    {
      "level": 4
    }
  ]
}