Bulwark: A Few Wounds More

From the publisher's blurb:

This product provides 6 extra wound cards you can use together with Extra Wounds from Blood-Soaked Plains and the wounds from the base set. With these extra wounds, you can make a 30-card wound deck consisting of 2 copies of each type of wound. With two copies of this product, you can make two such decks.

Useful for just that bit more variety in your wound deck.