The biggest trump Card is "Slifer the Sky Dragon." Since the ATK and DEF changes depending on the number of cards in your hand, you can show off your skill as a Duelist by managing the number of cards in your hand.
Furthermore, the effect of "The Revived Sky God" Special Summons "Slifer the Sky Dragon" from the Graveyard and then each player draws until they have 6 cards in their hand. It may give your opponent a chance as well, but it will also give you a chance to draw key cards that can break through their defenses.
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