<fieldset>
  <legend>Adversity Tokens</legend>
  <div class="resource flexcol" >
    <label for="system.adversity" class="resource-label">
      Begin the game with 3
      adversity tokens. Add 1
      each time you fail a roll.
    </label>
    <input type="number" name="system.adversityTokens" value="{{system.adversityTokens}}" data-dtype="Number"/>
  </div>
</fieldset>