A dev team that doesn't want to bother having to test the cards for a side set, no really the main reason bad cards are printed is that they don't have the resources to test the meta impact of 60-170 new cards they're releasing every month
If you do draw it later in the game, then you can pump loads of mana into it to dig down to that game-winning card
Although this three-month window is a fairly long one, it's worth noting that players were only able to obtain one copy of the card, meaning its population is likely incredibly low when compared to some of the other rare Pokemon TCG Pocket promo cards
Art and Flavor: The simplification of the art itself, the flavor text, and other meta aspects of the cards themselves
Who knew how well Spider-Man would fit in with Magic: The Gathering
If my opponent says the word "of," do I get every card with the word "of" or just one