HtmlNode htmltable = mydoc.DocumentNode.SelectSingleNode("(//*[@id='mw-content-text'])");
List<HtmlNode> tableRows = htmltable.SelectNodes("figure").OfType<HtmlNode>().Skip(1).ToList();



Results of tableRows - figure[0]
        InnerHtml   " \t<a href=\"/wiki/File:Angel_new_plus.png\" class=\"image\"><img alt=\"Angel new plus\" src=\"http://img2.wikia.nocookie.net/__cb20130219023214/reignofdragons/images/thumb/3/3c/Angel_new_plus.png/180px-Angel_new_plus.png\" width=\"180\" height=\"225\" class=\"thumbimage\" data-image-name=\"Angel new plus.png\" data-image-key=\"Angel_new_plus.png\"></a>  \t<figcaption> \t\t \t\t \t\t\t<p class=\"caption\">Angel+</p> \t\t \t</figcaption> " string