Hi everyone i need some help creating three decks for "The Winged Dragon of Ra" (with sphere mode and phoenix mode included), "Slifer the Sky Dragon", and "Obelisk the Tormentor" so i want to no witch cards i need for each deck for exemple all three gods cards have unique effects like Ra use life points for it effect and attack points, Slifer use the number of cards in my hand to gain attack point, and Obelisk use tribute for it effect. So what type of decks would be perfect for them ?????