When youre ready to play, draw a card and determine if you can use it on your playing field based on the description written on the card
The ol' Doctor Teeth from Odyssey was a powerful card, to be sure, but its buffs were only temporary
Azure OCR can be used through http request, where results are accessed via polling, each recognized block containing a bounding box and a text: Aside from the swamp (hard to see), the results of Azure OCR are very good
Once your shambling horde reaches critical mass, boost their attack and send everyone else to the graveyard
Read the grading guide Penny sleeve plus a top loader or a semi-rigid holder, kept out of direct sunlight to protect the holo, and stored flat since full-art cards are prone to bowing
Signatures can be annoying to verify, and not everyone is interested in them. And its not just artists who are known to sign cards, which makes it even more difficult to appropriately estimate a resale price for a signed card