Just the sort of thing that would go perfect on collectible cards. Like the line of Fortune Cards they recently announced with new and exciting powers to be used at the gaming table.
So, my prediction on the news is thus; the material that was originally going to be presented in those three books will be used as the core of a beefed-up line of collectible cards, with commons, uncommons, rares, etc. that can be used as gaming accessories, but which will not be available in any other format. They will be presented as a “purely optional” accessory, but one which will be required at “official” events, and eventually will be regarded as a standard part of the game. Thus, in order to have a kick-ass character, you’ll need to spend all kinds of money buying cards to have the full range of possible spells, abilities, etc. available. As Wizards themselves said in their announcement: