I would say try to rip the images from the game, since most of the ones provided here and on the net suffer from compression artifacts (but i doubt they will be any better...or?). It would be a waste of money with that low quality if you want to print them professional, also make your own ones and give it more a modern look, you don't want them to look like 10 years old cards made in MS Paint...(・`ω´・)
Here a quick mock-up of mine...the white line represents the bleed of the card.
Rapid99
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