The Exodia Strategy
This strategy is simple but you have to obtain all five pieces of Exodia in order for it to work. All you have to do is draw all five pieces of Exodia* and you instantly win the duel. But, there can be set-backs when using this strategy. Say you already have four pieces of Exodia in your hand and you only have to draw one more piece. Then, all of a sudden your opponent decides to use the "Card Destruction" card and BOOM, you lose those four pieces. So, you should include some cards to back up this strategy or use multiple strategies to insure your victory. You can throw in a "Monster Reborn" card to reborn a piece of Exodia from the graveyard or add a "Pot of Greed" card to draw up to two cards to get a better chance of drawing all the pieces. But, this strategy should be a last resort. Don't expect to draw all five pieces in one turn.
*Exodia - a monster of infinite power; the five pieces of Exodia will break the seal