So what are the Mr. Store cards? They are set of 12 unique cards that are used to randomly give each player in a game of Mr. Card Game so medium term goals that may shape that player's strategy. The game plays well without them, but this is a little extra flair and a thank you to those folks who backed us right out of the gate. This being the age of the internet, if you get the game later you will probably be able to find, somewhere, the info needed to mock up your own, and play with them. But if you backed us early in this campaign you get the ones designed and manufactured for the purpose of saying thank you. They allow for a bit more advanced play.
And the Mr. Accessory card, that thing is really confusing! Sorry about that, let me fall on my sword and apologize for not making that clearer to you. Here's the deal, the card "Mr. Accessory" acts like a 13th Mr. Store item, so when you are playing with those you can shuffle it right in there with them, and it will follow the same basic rules. The reason that we wanted to give you two is two-fold: we have some thoughts about releasing promotional content later on that will be redeemable for a Mr. Accessory Card (not the current set of Mr. Store Items, those will forever be a KS exclusive). So let's say a year from now, you decide to pick up a new copy of Mr. Card Game for your pal, Bill. But, since this is a new copy off a store shelf, it doesn't come with a Mr. Accessory card. Since, Bill is such a good friend, you give him your spare. Now when that cool promotional content rolls out Bill can get it too. The Mr. Accessory Card will have a redemption code.