It was exhausting work, and I havent even checked the other COTDs to see if they reference combos with erratad cards
If a Defense Position monster is attacked, neither battling monster will be destroyed by battle unless the attacked Defense Position monster has less DEF than the attacking monster's ATK
Top 30 Most Valuable Pokmon Cards at a Glance Pikachu Illustrator (1998 Promo) Blastoise Presentation Card (1998) Shadowless Charizard (1st Edition Base Set) Kangaskhan Family Event Trophy Card (1998) No
Finally, there's a Pot of Avarice-like effect that lets you recycle your cards and potentially allow you to use the 'Immortal God' opening strategy again, should your opponent overcome (or negate) your first attempt
Also, you can't sell these cards as they violate the copyright.
The standard month sequence can be used in games where card ranks rarely matter, such as Yomi-type, Kabu-type, and Kingo-type games