Well with the mechanics we are faced with today and my suggestion of ending with a copy of the card it would be free yes. Of course with the mechanics we have today getting a single copy of the card is basically free right now anyway. But I actually meant introduce them in game. For many peeps who don’t come here, or read the website a new card just shows up with no reason and no lore. If instead that lore were delivered in game then it would reach more people. I think peeps on the forums often forget there are whole segments of players who never see anything posted here or on the game’s main page. Extra-game communities are great, but they are a fragment of the game community as a whole. Thus I am always a fan of in-game delivery of information vs extra-game delivery. This would be an interesting and in theory low cost way of doing so.
They don’t even need to end in a free copy of the card (ie that wasn’t the point), I just thought it would be similar to the way each kingdom delivers an epic today. You get one copy by playing through the questline and learning some about that kingdom and its history. At the end the person who you helped through joins your cause. It has a nice fluidity to it that I happen to like.
The glory cost for a single copy is hardly a barrier even for new players so it isn’t like the card is remotely “exclusive” or some reward worth chasing. And a single copy of the card is nowhere near as useful as it used to be thanks to ascension so they would still need more anyway. It would largely just be a nice little “extra” for peeps. If for some reason it was determine to wreck the economy it is really not material to the concept. As it is, it probably only makes sense for the epic and lower cards anyway, not the legendaries (which is where the dual card events could come in).