Ignis is a free theme for WordPress created by athemes.
Ignis is a modern portfolio theme that features a custom home page template for displaying your projects, color and font options, multiple blog layouts and much more. In order to use the portfolio feature in Ignis, you need to have Jetpack installed.
(Description "Ignis" Theme from wordpress.org)
You can download Ignis for free via the provided download link and include it into your themes folder of your WordPress installation. Also you can directly search for it in the WordPress admin interface in the themes section and install and activate it from there.
More information, screenshots and reviews of Ignis Theme can be found here.