The game is driven by cards which can be printed out using most home printers. Each Clan has its own set of Cards - Focus Card and Victory Cards. These can be found by clicking on the image of the main Hero of the Clan.
The card I use is 300 gsm, available from Amazon here. I use these card protectors, they are slightly too big, but 'do the job'.
If you want, you can give the cards a better look by printing the Waelstowe logo on the blank back
Focus Card
Victory Card
Back of card