This promo was first given out to everybody whom bought The Siege of Runedar at Spiel 2021 in Essen. It adds 5 mercenary cards to the 5 from the base game and therefore will give you more possibilities to defend the castle. The abilities of these new mercenaries are: ignore all orc cards in your hand, remove up to 5 rubble pieces from the tunnel, place all remaining resources on an upgrade card, do a long-range attack with 5 dice & do a close-range attack with 5 dice.