Skill Expert

{
  "name": "Skill Expert",
  "page": 207,
  "__prop": "feat",
  "source": "XPHB",
  "ability": [
    {
      "choose": {
        "from": [
          "str",
          "dex",
          "con",
          "int",
          "wis",
          "cha"
        ]
      }
    }
  ],
  "entries": [
    "You gain the following benefits.",
    {
      "name": "Skill Proficiency",
      "type": "entries",
      "entries": [
        "You gain proficiency in one skill of your choice."
      ]
    },
    {
      "name": "Expertise",
      "type": "entries",
      "entries": [
        "Choose one skill in which you have proficiency but lack {@variantrule Expertise|XPHB}. You gain {@variantrule Expertise|XPHB} with that skill."
      ]
    }
  ],
  "category": "G",
  "expertise": [
    {
      "anyProficientSkill": 1
    }
  ],
  "prerequisite": [
    {
      "level": 4
    }
  ],
  "skillProficiencies": [
    {
      "any": 1
    }
  ]
}