If you were going to do this, what card would you use?
Do any credit card companies have restrictions on bitcoin purchases?
Which cards offer incentives and bonus dollars for purchases?
I really don't recommend that you buy bitcoin with debit card, it tried to do it once but the transaction took a long time that the price between the issuing of the transaction and when it arrived the price of bitcoin has changed by a considerable amount, aside from the high fees like 5% that i had to pay when buying , i would advice you to plan ahead and do bank transfers before buying any bitcoin so you won't lose time and potentially profit.
It boils down to timing though, it you had bought your bitcoin using your credit cards last December 2018, then obviously its good investment as the profit returns is already multiplying but today's price. But with the current price today? For me it will not be a good thing to do.