Wizards of the Coast, Magic's parent company, maintains a reversed list of historic cards. Listed cards can never be reprinted to protect their prices on the secondary market for collectors. Many players complain this is a bad for the game. As the counterfeits are getting better, more players buy them, pressuring Wizard to act. Maybe Wizards will abolish the reserved list.
Reserved list: http://magic.wizards.com/en/articles/archive/official-reprin...
More links: http://www.starcitygames.com/article/27693_Counterfeit-Cards...
http://www.channelfireball.com/articles/how-to-dismantle-the...