Magic: the Gathering
Kess, Dissident Mage, before being reprinted in Modern Horizons 1, existed only in the foil version contained in the Commander 2017 preconstructed deck and as the MH1 version did not yet exist (which was only printed in 2019), and the card was being used in Legacy decks, it was necessary to open this exception to use a proxy for players who had Kess in their decks. The most recent example of that kind of proxy use was
Nexus of Fate, which only came out in the foil buy-a-box versions, which led to head-judges creating proxies of the card as long as players had their original copies to show, so it wouldn't be spotted on the deck since they were the only foils. Regarding altered cards, it is undeniable that it is very fun, beautiful and different for someone to have a unique, outstanding card. It's another element of the series of things that make Magic more than just the game itself, as there's a whole experience involving art, card design, color matching, etc. The document's concern, in this case, is only to clarify that altered cards cannot contain offensive words/images, make the original art unrecognizable, or contain strategic help. Makes sense, right? After all, imagine if you could use a
Meddling Mageand write on top of the card the best “options” for you to name!
PS: All altered card images in the article were taken from MtgAlters on reddit.