But for cards that already exist, I don't see any realistic long-term harm in keeping them in circulation
These can be found in Play Boosters (non-foil versions) and Collector Boosters (foil versions)
The ending leaves him injured and missing rather than killed, and that has also been backed up by official Wizards reps, including Roy Graham on Bluesky
Before the reprint, we saw Authority of the Consuls in around 90,000 decks, and already that number has climbed to 96,000, despite the fact that Foundations has been out for only a few weeks
Modern has seen a pretty big shake-up in the past month, as changes to the MTG banlist saw three cards get the chop, while four very powerful spells got unbanned
These have gone in and out of stock, so you might have to check back later if initial preorders sell out