7 Wonders: Leaders adds 40 new cards to the base game of 7 Wonders, comprising three new guilds, one new wonder card, and 36 white 'Leader' cards. At the start of the game, each player takes a hand of four leaders and may play one at the start of each of the three Ages. Unlike the standard cards, leaders cost money (not resources). The expansion comes with a new Wonder - the ancient city of Rome - and contains 6-gold tokens made of cardboard for more efficient money-management. - BoardGameGeek