While most were corrected or removed from sale, some slipped through, with their printing fault only adding to their uniqueness, as well as their price
Attacking creatures become blocked
Curse of Opulence lets you generate mana as your opponents attack each other, so you get your Gold tokens on turns that arent your own
The ever-evolving list from Wizards of the Coast bans and restricts previously released cards, so that cards that end up becoming too powerful and give players an unfair advantage can't be used in tournaments
Its evasive, doesnt trade down to Shock, blocks well against red and white aggro decks, and threatens opposing planeswalkers, which are posed to be prominent in Standard once War of the Spark has its full impact
And with no sort of compensation being given to those who crafted the cards, I don't see how that's not worse than dusting a card that might be useful and you can recraft later on