Another easy option is to use immense creatures, like Blightsteel Colossus, to ninjutsu onto the battlefield for some one-shot kills
For example, Clive, Ifrit's Dominant is a legendary creature on the front side, but transforms into Ifrit, Warden of Inferno on its back side
If that creature would die this turn, exile it instead
But some, like the 2011 and 2012 Tropical Beach card from the Pokemon World Championships, can easily fetch hundreds of dollars
A counterfeiter shows off their hologram on a Damnation Moving up the line, if it gets to the point where fake cards are indistinguishable from real cards (which is the stated goal of counterfeiters and the dream of at least a large portion of the counterfeit community), and once fake cards are widely available and accepted by the community (which is likely to happen if / once they are really indistinguishable from authentic cards, because how could you know if the card you were playing with or against was real or not?), it could be a threat to the very existence of the game
