You could be more specific about what you meant by add node page. Did you mean node/add page? If thats the case, then I would suggest you use Menu Item Visibility to hide the default add node link and make it visible to only your admin role(s), then create a block containing the add node-type links (eg node/add/article etc) and descriptions the way you want other users to see it, place this block inside your panel page (/test), and create a menu item that links to /test, making this only visible to non-admin users.
Drawback for this is that each time you add a new content type for non-admin users, you have to manually add a link for it to this block
Edit: Alternatively, since you want to achieve this using rules, you can install the Rules Bonus Pack module (You need Rules module for this), the sub-module you want to enable is the "Miscellaneous", then Create Event "Page variant is rendered" Condition "Logged in user has role (your role), Action "Page Redirect" here you add the page "test" without the quotes (dont add a leading slash as in /test). Then you can do whatever you want on that page. Hope this helps.