"Fiendish Foes" is a 15 card expansion pack for the non-collectible customizable "Tower Siege" fantasy card game. It contains the following cards: Adventurer's Guild Arcanium Stone Barbarian Battle Axe Bloodlust Exorcist Fire & Brimstone Hill Giant Hidden Mine Mine Merchant Platinum Coin Power Surge Ring of Resistance Sarcophagus Expands: Tower Siege