A member of the former Commander rules committee dubbed them legal, but only for the person whose name is on the card - meaning that, as soon as they're sold, they go from functional playing pieces to pure collector's items
Standard might struggle a bit more for this
Beyond standard cards, the collection includes Tokens/Emblems designed specifically for these releases, as well as peripheral items such as themed dice and original packaging
Junk Winder Of course you simply must include Junk Winder in decks that drop a lot of cardboard like Lonis, Cryptozoologist and Eloise, Nephalia Sleuth
Some examples: Swords to Plowshares, Teferis Protection, Chaos Warp, Great Train Heist (or other Spree cards, you pay extra costs but can go wild), Akromas Will, Deflecting Swat, Wear/Tear, and my personal favorite, Reprieve
One of Magic's best black enchantments and best black ETB cards, it offers strong value thats easy to understand and build around, and it even works well in generic decks that lack a reanimation or graveyard focus