When Horizon Scholar enters play, you're able to scry two cards (meaning you can look at the top two cards on your deck and then decide either to put one or both of them on the top of your deck or at the bottom)
The Moxen were iconic and expensive cards at the time they were banned, and removing them from the card pool was intended to combat the notion that Commander is a prohibitively expensive and inaccessible format
The best we have are estimates that a truly unopened, authentic Alpha booster box could fetch a six-figure price tagpossibly $700,000 or more if one ever surfaced
Its a great late-game card if you have a large board since its power is dependent on the number of creatures you control
And the overall power level jump has pushed decks to be hyperefficient and built around one-mana plays, making Standard feel more like an eternal format than the low-powered intro format it was designed to be
The following sets all have at least one scarecrow in them