Errata Patch Cards
Apply a "patch" to your copy of Campaign Expansion that was printed before a certain errata version by sliding these cards under. The original card is placed on the empty space.
Your copy may already have a certain errata version applied, you should check and selectively choose just versions newer than that.
Orientation of these cards are depending on card type which it patches. Back side graphic is also available, which it say just the target card in big font.
New! : This project is available on Inexorable Fate to generate your own copy of MPC (Make Playing Cards) project to order prints from them.