Cole does a great job of explaining the point of power cards.  They're tools for managing the use of daily and encounter powers in D&D.  Of course, purists like Francis there will undoubtably hate them, but I can certainly see the appeal of them, especially the higher in level a player's character gets.  Check out this post from EN world regarding the creation of the powercards below.  And Props to Ander00 for these. And thanks to my little gnome pal Noonzio for finding them while taking a break from looting the bodies!