To make the duel go faster all you have to do is hold L from the start of the duel until the end of the duel.

This deck has never lost for me ever!!! Once you have all cards and can change the limitation in options you have to get this deck!!! ( The limitation is when you can make it so you can .EXAMPLE. Have 3 Exodia pieces instead of 1).

MONSTERS

1 Blue-Eyes White Dragon (You send it to the graveyard and monster reborn it without sacrificing)
1 Summoned Skull
1 Cyber-Tech Alligator
1 The Fiend Megacyber (Its effect rulz!!!)
1 Gemini Elf
2 Vorse raider
1 Airknight Parshath (Its effect also Rulz!!!)
1 Opticlops
1 Axe Raider
1 Guardian Sphinx (Awsome effect!!!)
1 Shining Abyss
1 Total Defence Shogun (Awsome effect!!!)
1 Headless Knight
1 Celtic Guardian
1 Mad Sword Beast (Allright effect)
3 Witch Of The Black Forest (You'll know why when you scroll down some more)
2 Sangan
2 Cyber Jar (Awsome effect!!!)
1 Muka Muka (Allright effect)
1 Sasuke Samurai (Allright effect)
1 Right Leg Of The Forbidden One
1 Left leg Of The Forbidden One
1 Right Arm Of The Forbidden One
1 Left Arm Of The Forbidden One
1 Exodia The Forbidden One

SPELL CARDS

1 Raigeki
1 Swords Of Revealing Light
1 Harpies Feather Duster
2 Graceful Charity
3 Monster Reborn
3 Pot Of Greed
3 Change Of Heart
1 Gravekeeper's Servant
1 Premature Burial
1 Infinite Cards
3 United We Stand
2 Mage Power

TRAP CARDS

1 Mirror Force
2 Ring Of Destruction
3 Magic Cylinder
1 Ominous Fortunetelling
1 Coffin Seller

All up together that is 60 cards, the maximum you can have. Trust me when I say that this is the best deck, it hasn't made me lose yet.
You just have to play the cards right and you will always win. I've beaten Tristan 132 times. I've Beaten Yami Yugi 90 times. Trust me, the deck is AWSOME!!!

To get more cards, keep beating guys and keep winning cards until you get the strong/good cards you like.

The best deck you can ever build no matter what is the YATA deck:

1x dark hole
1x raigeki
1x magician of faith
1x gemini elf
1x witch the black forest
1x harpies feather duster
1x jinzo
1x graceful charity
1x monster reborn
1x pot of greed
1x change of heart
1x mirror force
1x heavy storm
1x snatch steal
1x confiscation
1x delinquent duo
1x the forceful sentry
3x mystical space typhoon
3x mystic tomato
1x imperial order
1x nobleman of crossout
1x premature burial
1x call of the haunted
3x vorse raider
1x ring of distruction
1x slate warrior
1x torrential tribute
1x exiled force
1x fiber jar
1x YATA GARASU
3x drop off
1x don zaloog
1x spirit reaper

(this deck will take a while to build and for more advanced duelists).

First of all, battle Bakura for a while since he is really easy and you can get lots of boosters by defeating him a lot of times. Happy dueling!

maku tsunami: the masked beast( beat hem ten times, its always so)

mai valentine: zombrya the dark

joey wheeler: yamata dragon

maximmillion pegasus: guardin sphinx

bandit keith: dark ruler hades

I have a good exodia deck(44cards).It has 4 normal monster, 17 effect monsters, 12 magic, 10 traps.

NORMAL MONSTERS
Right Leg of the Forbidden One
Left Leg of the Forbidden One
Right Arm of the Forbidder One
Left Arm of the Forbidden One

EFFECT MONSTERS
Exodia the Forbidden One
Sangan
Cockroach Knight
Hane-Hane
Witch of the Black Forest
Jinzo
Slate Warrior
Goblin Attack Force X2
Hysteric Fairy X3
Kycoo the Ghost Destroyer
Exiled Force
Spear dragon X2
Spirit Reaper

MAGIC
Dark Hole
Raigeki
Swords of Revealing Light
Hapie's Feather Duster
Graceful Charity
Monster Reborn
Pot of Greed
Nobleman of Crossout
Premature Burial
Infinite Cards

When choosing a duelist, hold down L until the duel starts.

The gameplay speed will be twice as fast than normal.