Staff blueprints were attainable in the game from 26 April2013 to 6 May2013. Staff blueprints were dropped by a monster or won through the Squeal of Fortune. They were an "uncommon" reward in the Squeal of Fortune. They are still used to create starfire or starfury staves if you got them during the release dates mentioned above.
Upon reading them, you will get the message: The blueprints needed to create a starfire or starfury staff. I should talk to Ivar at the Artisan's Workshop for more information about this item.