A new consumer card product aimed at top spenders has been announced by Mastercard, which will concurrently launch upgrades to dining, travel and entertainment benefits selected to appeal to those cardholders. World Legend is the new card product. The Mastercard Collection is the name for the curated benefits package, which is available to Mastercard World, World Elite and World Legend cardholders. World Legend, which must be a metal card, supplants World Elite as Mastercard’s top prestige product for consumers. Citi, which ranks third largest among credit card issuers in the US, is th...