The Cards content type is a considered a hidden-path content type, because it is designed to be used with content that does not display on a page of it's own. We use Cards to create and edit content that will mostly be used in blocks or views.
The Card content type comes with three fields by default:
It also comes with "Hide path display" option selected in the content type configuration. With this checked, only site administrators and/or editors will be able to view the original content until it is place in a block or displayed in a view for site visitors.