Compare the holo pattern and texture against a known-good reference image, check the card back swirl and color gradient, and do a light test for the black core layer inside the card stock
Development [edit] Leaping Lizard Software (LLS) had just completed a software product Magic Interactive Encyclopedia designed to allow Magic players to track which cards they owned and other cards that had been printed to help with online play
Finally, here is Gustavos list in full:
In-game, this speed is best reflected by the warp mechanic
To return to Cardhoarder, you would go to your account page on their website and request to return cards
If youre super confused at this point because you have no idea what proxies are, let me explain: proxy cards are essentially printed, homemade copies of MTG cards with different art or abilities (sometimes), or a completely custom card that doesnt exist in Magic like this or this