So it costs a card, who cares
You can't play it multiple times
If you dont mind them, by all means, use them
If you print and find the fit of the phone arm to body of the slinger is loose, increase the scale of the arm by 1 or 2 % and print again, i did my best to provide tolerances that would suit entry level printers at .4mm tolerances I have printed with 3 perimeter walls, 4 top and bottom, and at 7.5% infill and it is quite robust User Tips and App Mana box is easily the best app for this , hands down and recognizes MOST cards, and has quick features to set a card as foil, or change set etc Here is a quick video of my settings and use of ManaBox - I use the prefer foil checkbox to scan foil items in bulk separately from std
4) Leafeon ex (144/131) This Leafeon ex has one of the most unique Special Illustration Rare designs in the set, and its been met with a positive response from the community online