The Credit One Bank Omni Rewards American Express Card stands out on a number of fronts: It earns unlimited 2% cash back on all purchases , offers redemption flexibility for that cash back, and features a lucrative welcome bonus — all with no annual fee or foreign transaction fee. The card is issued by Credit One Bank but runs on the American Express payment network, which means cardholders also get access to some valuable AmEx perks. Notably, the card lacks a 0% intro APR period that similar rewards cards on the market offer. Plus, as with many of those other options, you’ll need excellent credit to get this card. Here’s what to know about the Credit One Bank Omni Rewards card. 1. It boasts a simple but lucrative cash-back rate The Credit One Bank Omni card earns an unlimited 2% cash back on all purchases. That puts it on par with some of the best cash-back credit cards on the market, and it's ideal for those who want valuable, straightforward rewards without having to juggle bonus categories.…