The squat shape of the impostor, the similar visor, the airlock they're being pushed out of
You'll be more likely to have the right answer at the right time to your opponents' annoying attempts to do stuff like wipe the board, win the game, or even just steal or lock down your commander
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
It helps with the rest of the gameplan as well, with creatures like Godo, Bandit Warlord or spells like Goldwardens Gambit or affects that do really quirky things like turn other artifacts into Equipment
Above all, always remember that playing a land is a free action
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)