If they die, get exiled or anything else that removes them from the board, you can instead put them back in the Command Zone, but you have to pay two more mana to cast them - and that cost goes up every time
Approach of the Second Sun, for example, exists as a mythic in the Strixhaven Mythical Archive , but it's also a normal rare in Amonkhet Remastered
THAT SAID, old-border cards which were printed in both The List and Mystery Boosters are visibly different
They're a special kind of counter that stops tapped permanents from untapping.
It is simply an alternative version with a holographic treatment on the frame, the Pokemon name, text areas and sometimes the card background
In Brawl's best-of-one format, players also don't need to worry about building a 15-card Sideboard