The squat shape of the impostor, the similar visor, the airlock they're being pushed out of
One fan who runs a website dedicated to Pokemon trading cards tweeted that he called 25 locations to inquire about the limited edition cards, and all told him that the cards are only available with Happy Meal purchases
No, they won't win a wrestling competition with an attacking Dragon, but they have various ways to bounce it (Harbinger of the Tides), shrink it to a manageable size (Serendib Sorcerer), send it elsewhere (Portal Mage), kill it (Terminate), and finally reanimate that pesky Dragon and make it punch its owner in the face (Puppeteer Clique)
While this card has seen a few reprints over the years, Venterss original artwork remains the best example of it, as it simply has that retro charm that other printings of the card lack
In addition, when a card from The List drops, slightly less than 5% of the time it will instead be a Universes Within version of a card from Secret Lair X The Walking Dead