With the borderless Urza, Lord High Artificer card, we see an older, still human Urza possibly on his way to his final confrontation with his brother, Mishra
This gives the new player something to work with while also trimming the more experienced player's own collection.
This was intentional on Playmaker's part, however, as he shortly afterwards brings out "Firewall Dragon" and co-links it to two other Link Monsters and subsequently clears Yoroizaka's Field of Monsters completely, leading to his defeat
To them, games are a means of sharing their identity with all the other players
They can also lead to your Twenty-Toed Toad hitting the twenty-counter win condition in only a couple of turns
Then Ill crack it, try a few more things, and then resubmit it without the guilt of damaging a card