A lot of them present alternate art, with guests like Junji Ito invited to present their own take on iconic cards, though since the best-selling Walking Dead secret lair back in 2020 they've often been crossovers
If the copied creature is copying something else, then Kimahri becomes a copy of whatever that creature is copying, with the listed exceptions
The Knowledge one will, for two mana, copy an ability you control
Meanwhile, players with Guardian cards need to keep the Leader alive, and the Leader needs to survive until only they and their loyal Guardians are left standing
Expect to see a mix of stunning artwork, powerful new abilities, and chase cards that are bound to become fan favourites