Buy it from my DriveThruCards store :

Number of cards :20
Size : 2.5 » x 3.5 » (63.5mm x 89mm)
Packaging : Shrink-wrapped or Plain white tuck box

Optional Campaign Cards to complete your Mordheim Warband.
The Campaign Deck is designed to track your unit’s progress during campaigns.

How tu use with your Faction Deck ?
Easy ! Simply insert a Campaign Card into the back of the sleeve of any chosen unit card to keep track of its experience gains, Skills and Injuries.
You’ll have your unit’s complete profile, Abilities and Equipments on the front, and its progress through the current campaign on the back!

Includes 2 Warband Cards, allowing you to record details about your warband ; such as its name, Type, Plot, Treasury (Gold Crowns & Wyrdstone), Rating, and Stored Equipment!

Cards are poker-sized and easy to sleeve to protect them and allow writing on it with erasable markers.
You can also write directly on the card with a sharp wooden pencil, allowing you to erase afterwards.