Secret Rare Cards
Go to the password menu and type in these codes:
Effect Code
Tri-Horned Dragon 3911115
Cosmo Queen 38999506
Blue Eyes Ultimate Dragon 23995346
Gate Gaurdian 25833572
Black Skull Dragon 11901678
Millennium Sheild 32012841
Gaia The Dragon Champion 66889139
Red-Eyes B. Dragon 74677422