Although you posted this in the iWork for iOS forum, it appears that you actually have the desktop version, so I'll answer in that context.
It looks to me like Pages includes two lame birthday card templates. In addition, Pages can usually open templates for Microsoft Word. A Google search brings up lots of templates availlable on the web; most of them are probably lame.
All a template is, really, is a formatted document. If it is the right size, the lame content or lack of variety don't matter because you aren't supposed to keep that content; it's just a placeholder for something original of your own.