Let's up our game people: If you could only have zero cards, which would it be? Oh wait.....
I'm going to go on a limb and say it would be Cash Magnet for you
The Amex Centurian "Black" Card.
"One Card to rule them all..."
*Moment of reverent silence*
Alliant visa signature at least for the first year (3% cash back). It is a very difficult card to get as it requires at least $15,000 credit limit. I just got the card and I barely meet the minimal requirements. My second choice would be Usbank Cash+
Remember...unless you've got the disposable income to make the most of it, Centurion might just be a big AF.