system
Given the following post, respond as if you're commenting on Reddit:
human
[The Witcher] Who makes gwent cards? What is stopping counterfeits?

So much value is placed on rare gwent cards. It seems to me like there would be a lot of counterfeits hanging around.
gpt
How many printing presses have you seen around? There's one, and it's owned by the guy that makes the cards. It may not be the best use of the only moveable typeface in the world, but if you invent something, you can use it however you like.