I've put together a few card ideas using this website: http://achievementgen.com/hearthstone/index.php - if anyone else has a suggestion for a Shaman card then feel free to add their own. Just be sure to save your image to a dedicated image host like Photobucket or Imgur, otherwise the image will disappear after a while.
Anywho, here are my suggestions. It's likely that they're far too overpowered as I'm not that great with balancing.
I'm of the opinion that all classes should have access to Secrets, so that's why I've added some. Please let me know what you think and be sure to add your own :D
I've changed image hosts so the cards are easier to see. They are now organised better.