Well, given that there are only four rare gold Charizard cards, not including promos or non-cardboard cards, it's not all that surprising
Something along the line of a scannable code on cards to verify authenticity would get the job done, but implementing the program would be costly, and it wouldn't help with all the cards that are currently in print (barring some sort of mass-exchange program, which would be even more prohibitively expensive)
Normally thats a slow process, but Abidoss Skill Card speeds it up: once per turn, the Ancient Ruler Rises Skilllets you send a Level 2 Zombie from your Deck to the Graveyard and places one of your Sarcophagus cards from your Deck, Graveyard, or that was banished, face-up into your Spell and Trap Zone
That bonus life gain will make a real difference when facing the burn player