The L-Deck is a promo card expansion for Agricola. It is comprised of a series of cards given away at Spiele Essen. Each year, the new set of promo cards are included in the L-Deck and continue the numbering from the previous years' release.
For Essen 2008, eight of the cards were printed in a 12 card set—some were included more than once—and handed out as promotional items by the people depicted on the cards.
For Essen 2009, fifteen new cards were printed in a 24 card set—some in German, some in English—and handed out as promotional items by the people depicted on the cards.
Most of 2008 and 2009 promos are included in Agricola: The Goodies Expansion.