Any other color is a counterfeit
When flipped, both players have to discard their entire hand and then draw 5 cards
The deck consists of dragons across multiple archetypes working together to link summon more times than you could hope to count, and its crazy consistent
Konami issued an Advanced format which is used in tournaments and is a list of cards that are forbidden or limited to a certain number of copies of a certain card per deck, (To see the current March 2010 list of forbidden cards, check out www.yugioh-card.com, the website covers all regions so its good for everyone!)
During your opponent's Draw Phase, before their draw, look at the top card of their Deck, then put that card on the top or bottom of their Deck
While it's only a 2000 ATK monster, which isn't much for a level 8 XYZ, its effects make the card stand out