Verified answer

http://yugioh.wikia.com/wiki/Seto_Kaiba%27s_Decks

hope this helps.

Seto Kaiba Deck Recipe

you should have posted your deck recipe.

but the cards you must have are

blue eyes x 3

vorce raider

blade knight

ja jinn

x head cannon

y dragon head

z metal tank

xyz fusions

blue eyes ultimate dragon