fontnames.php

<?php

$results  = new Pages();
$children = $pages->find('webfonts-in-action')->children();

foreach($page->fontnames()->split(',') as $fontname) {
  $results->add($children->filterBy('fontnames', $fontname, ','));
}

foreach($results->shuffle()->limit(3) as $result): ?>

<!-- your html for each result here -->

<?php endforeach; ?>