At first, it may seem supremely underwhelming
Aetheroworks Marvel: Compare with Quicksilver Amulet , a 4 drop rare artifact (Pay 4, tap, You may put a creature card from your hand onto the battlefield.) Here you have to pick from the top six cards of your library
My following comments are speculation, but: The card designs could have been approved around the same time period as the first wave of 1996 cards, the contract could have enforced the release date of 1997 to stagger product hitting the market, the contract could have stipulated mew was to be withheld until approved, or indefinitely, or permission triggered by some other event such as a sales target
Ozzie Mejia posted a new article, Embark on a Sidequest with the next Magic: The Gathering - Final Fantasy card reveal
As your life points tick down, you can flip facedown cards representing each life point to your hand - if the card drawn has a 'trigger' effect, this can be activated immediately to shake things up