It can handle the other efficient decks, and it still has game against the bigger decks in the format
Rosewater said silver borders weren't appropriate for Unfinity's cards because, unlike previous un-sets, many of them complimented existing cards, rather than upsetting the game's balance, leading the team to develop the acorn security stamp designation
If the only thing youre breaking with copies are Attractions, I dont think anyone will protest
Once you inevitably start exploring formats outside of just Standard or Modern and dig through older cards, promos, bonus sheets, serialized cards, alternate treatments, and whatever stunning nonsense Wizards decided to put in Collector Boosters this time around, rarities will start looking a bit messier
You can't do anything between putting the artifact card you found in your hand and discarding