Cards have been circulating for a few weeks now in the prerelease timeframe
Some shops even accept trades and may buy your cards as well, typically for 80% of the cards market value
This card pays off sacrifice strategies by generating Food tokens when your Creatures die, and mills opponents libraries whenever you sacrifice a permanent
By the way, for anyone wondering why Arcanine is the mascot its because it closely represents one of the symbols of Okinawa, the shisha
The only difference from that card is the stamp, so inspect copies carefully to check for the difference
Discounting the legal aspects of the entire situation, this argument rings hollow, mostly because it's not just expensive cards that are being counterfeited