Imagine every time you want to build a new deck, you have to sift through those hundred (or maybe thousands) or cards to find the ones you need
Once they're in the game, they're in the game
Card Spoilers A new rule change will mean that Legendary Vehicles can now occupy a Commander Zone, like The Seriema above
Now Im not only out the sale price, but the card I bought is likely worth well below what I paid rather than well above
While this can be situationally powerful, especially if your opponent is running the likes of Yargle and Multani, its often difficult to leverage effectively in a multiplayer setting where threats can come from multiple angles
You need nonlegendary enchantments that do something on entry, or enchantment creatures, to get any kind of benefit