Yes, after the expert cup you can get it from Ishizu.
Unfortunately, no previous YGO! DS games can link with World Championship 2008, so you cannot get the God Cards from Nightmare Troubadour. I know for a fact that "Slifer the Sky Dragon" was offered as a downloadable card for one day, so perhaps that is the only way of getting the God Cards. yes ghosts exists.
either trade from nightmare troubadour or use an action replay (don't know the code though)
I belive you must join a wireless game with a Yugioh Nightmare troubadour on ds that has a god card. You then can buy the god card for I belive 4,200 DP. The Nightmare Troubadour game will not lose the god card if you buy it, or any other card. This is the only way to get cards like Raigeki, and Monster Reborn.
you can take the god cards by going and asking your older brother or sister for help
No i think you can only have one at a time. Also there isn't a code for the god cards.
After beating the expert cup search for Ishizu and you'll have to duel for it. (When I played I had to beat Seto Kaiba for Slifer the Sky Dragon). You can only have one god card at a time unless you use Action Replay cheats. You can trade the god card you get for the one Yami Yugi has or after beating the game you can trade Marik for Ra.
Find Ishizu and get and the Egyptian god card.
It will work depending on what card.
no you cant
there is not any.............................................Sucker
its the god cards man. or exodia
there are none.