Its kinda hard to trigger, but creating a pair of 2/2s is exactly the kind of payoff I like to see if the trigger condition is fairly hard to satisfy
As well as that have generally all Standard cards available at all times, unfortunately they don't have a ton of cards that aren't currently in the Standard format though
Doing so, on the same card, is even more awesome
So to have an even stronger version of that, I think that kind of got a lot of people excited. While it may not seem like an important part of designing a card game, Creatures does spend time crafting the story of each set, but because cards can only convey so much information through images and single lines of flavor text, its not at the forefront
My verdict: The Sapphire & Steel Deck is best for duelists who prefer a defense-heavy, resource-driven playstyle that wins through stability and strength
Countering activated and triggered abilities has been useful for years, and doing so in a way that makes it difficult for your opponents to interact is even stronger