Quote:
{rss:title} - Displays the title of the item

Quote:
{rss:description} - Displays the short description
{rss:link} - Provides a link back to the original item.

These are not available on all feeds. The feed should be previewed before being saved to ensure that these are populated:

{rss:content:encoded} - Displays the full text of the item. This applies to RSS2 feeds feeds only.
{rss:dc:creator} - Displays the name of the item author
{rssubDate} - Displays the date the item was published
{rss:category} - Displays the category that the item is in
{rss:guid} - Displays the permanent link for the item.