function doRound() {
    var stats = [];
    $(".egg-stat").each(function () {
        var title = $(this).attr("title");
        title && stats.push(parseInt(title, 10));
    });

    var i = stats.indexOf(Math.min.apply(Math, stats));
    var buttons = $(".egg-action").find("button");

    buttons[i].click();
}

window.setInterval(doRound, 7000);