The cannot be affected by spells, traps, or monster's effects. So they are really unstoppable.
Are you talking about Yu-Gi-Oh cards?
There are the Egyptian gods, destiny hero plasma, the wicked gods, I also think maybe the earthbound immortals as well
most people will say that you have to cheat to get the god cards, but the REAL way to get the gods, is to download them over WiFi when they release them
Yes, the wicked gods can destroy the god cards.
It's not a true monster card that you can get, but the god cards were fused to form the Creator of Light - Horakhty to defeat Zork Necrophades in the final season of the original Yu-Gi-Oh series. There was no card to represent it, none of its statistics or effects are known.
sacrafice cards to summon stronger cards
obelisk,slifer, and ra.
Make flash cards.
it depends on whether you are using the new legal cards or the traditional cards from the anime released as a promotion to a game-boy game (don't know which one). The point being the latter are far more powerful and the legal Egyptian god cards are not worth buying when you can get the unofficial anime TV series wicked gods which seem to be far more powerful (specifically wicked avatar). and in case your wondering with the traditional effects of the Egyptian gods they are by far the most powerful cards in the game.
The creator of light, Horakhty
That would make a bad deck, considering all that would require too many Tributes
it wouldnt