Charm of Darkvision

{
  "name": "Charm of Darkvision",
  "page": 228,
  "type": "Charm",
  "__prop": "reward",
  "source": "DMG",
  "entries": [
    "This charm allows you to cast the {@spell darkvision} spell as an action, no components required. Once used three times, the charm goes away."
  ],
  "reprintedAs": [
    "Charm of Darkvision|XDMG"
  ],
  "additionalSpells": [
    {
      "innate": {
        "_": {
          "limited": {
            "3": [
              "darkvision"
            ]
          }
        }
      }
    }
  ]
}