On Creditcards*com there is a option for a
DiscoverŪ Business Card for Small Business
0% Intro APR* on Balance Transfers for 18 months
Free employee cards with customizable limits and monthly reporting on their spending
Fee-free PurchaseChecks to pay merchants who don't accept credit cards
5% CashBack BonusŪ on office supplies, 2% on gas and up to 1% on all other purchases*
No annual fee and unlimited rewards
I cannot find it listed anyhwere else; even in discovercard.com

