If I had to narrow it down though, I would say my Korean Kiss Dark Rituals that I got from you, my altered Tropical Islands, my foil Japanese Dazes and Grove of the Burnwillows, my FBB and Beta Duals, and my $30 Black Lotus (its pimp because it has character!)
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For the first turn of the game, the starting player doesnt take their Beginning Phase because they have no cards in play, and they skip drawing a card to make it fair for the other players
Its never going to be overpowered, and that can be a good thing
Number Wall's effect to protect Number monsters from being destroyed by battle, except against other Number monsters, was an effect that was common to all Number monsters in the anime, but removed from their OCG cards