<?php
/*
	Template Name: Random Post
*/

remove_action( 'genesis_loop', 'genesis_do_loop' );
add_action( 'genesis_loop', 'prefix_do_loop' );

function prefix_do_loop() {

	global $paged;

	$args = (array(
		'orderby'       => 'rand',
	 	'paged'          => $paged,
	 	'posts_per_page' => 1,
	 	'category_name' => 'testimonials'
	));

	genesis_custom_loop( $args );
}

remove_action( 'genesis_after_endwhile', 'genesis_posts_nav' );

genesis();