A close representation of Kaiba's First Deck (from the anime, but second Deck in the manga) that used against Yugi in Episode 1.
This is NOT his Duelist Kingdom Deck. This Deck is meant to be played in the same format as the First Episode of the anime (and much like the start of the manga, Traps would only have been introduced later on).
Definitely took the chance to give Kaiba "Millenium Shield", since you didn't need to pay for tributes (at this point of the story) and it appears in his Forbidden Memories decks (which made everything all too annoying).
"Rage with Eyes of Blue" definitely makes a refference to this Duel, so why not keep it too? (as a Side Deck option, just as an Easter Egg).