I guess after the deck the next step will be "collectable" miniatures. And these artifacts how if they had their own wil can appear in other places of the multiverse, even in our "real life", causing a lot of troubles. This is perfect for a Paramount action-live production. Don't laugh. This magic figures also could be the plot of a horror movie. Maybe those magic figures are linked with the Xovirntaal or the great game played by the dragons. Who would dare to create those figures? Some crazy and too bored planewalker.
Some times I suspect WotC, and some players, want to add some elements of collectable cards to D&D. Physical products can't suffer piracy in internet, but players don't want to start a new game because it is harder to find other players to play with. And the virtual board-games don't need a powerful computer, but they can be released as mobile and tablet videogames, something style mortal kombat: onslaught.