Hi there,

You can create a post-based slider using Revolution Slider and then add it to the homepage:

You're right but there is a trick for this, firstly create a new page and add a slider to it, after you've done this step make sure you're using the Child Theme first then go to Appearance > Editor and under the functions.php (check article) file of your child theme add this code:

add_action('kalium_blog_archive_before_content',function(){ 
    $post = get_post(4861);
    echo do_shortcode($post->post_content);
},5);

replace the 4861 value with the ID of the page you just created, you can get the ID here:

(view large version)