Factory Settings
Apart from the basic lands in alpha/beta, Antiquities was the first set with different versions of the same card. One could argue that the misprints in Alpha (like Cyclopean Tomb) got a new version in Beta, or that the cards in Arabian Nights that got updated mana symbols (like Oubliette) technically exists in different versions, but Antiquities was the first set where this was consciously done by using different art. Having cards with different art became popular in the mid 90s, and it could be seen extensively in Fallen Empires, Homelands and Alliances. Nowadays alternative art is almost exclusively used in special products, like "From the Vault"-supplements or Duel Decks. I think that the last time we saw multiple versions of the same card in a normal set was during Kamigawa (with Brothers Yamazaki). In antiquities, there were five cards with different versions; the three Urza lands, Strip Mine, and Mishra's Factory. The Strip Mines look very much alike, and t...