The newest Tryout Duel event, Time Travel 2004, will run until March 6th (time zones applying). By winning 3 Duels, you can obtain 1 pack of the most recent reprint pack, Name of Champions.

The special rules for this event limit the card pool to November 25th, 2004, which is the release date for the OCG version of Flaming Eternity. This is chronologically slightly earlier than the popular “Goat Format” (April 2005). The player going first will also draw a card. The Extra Deck is still limited to 15 cards, and the Main Deck is limited to a maximum of 60 cards.

The following Forbidden/Limited List for the event is the OCG Forbidden/Limited List from that era (September 2004):
Forbidden:
[Every card newer than Flaming Eternity, Nov 2004]

Chaos Emperor Dragon – Envoy of the End
Sangan
Witch of the Black Forest
Yata-Garasu

Dark Hole
Delinquent Duo
Graceful Charity
Harpie’s Feather Duster
Monster Reborn
Raigeki
United We Stand

Imperial Order
Mirror Force

Limited:
Black Luster Soldier – Envoy of the Beginning
Breaker the Magical Warrior
Dark Magician of Chaos
Exiled Force
Exodia the Forbidden One
Injection Fairy Lily
Jinzo
Left Arm of the Forbidden One
Left Leg of the Forbidden One
Morphing Jar
Protector of the Sanctuary
Reflect Bounder
Right Arm of the Forbidden One
Right Leg of the Forbidden One
Sinister Serpent
Tribe-Infecting Virus
Twin-Headed Behemoth
Vampire Lord

Card Destruction
Change of Heart
Heavy Storm
Mage Power
Mirage of Nightmare
Mystical Space Typhoon
Pot of Greed
Premature Burial
Snatch Steal
Swords of Revealing Light
Upstart Goblin

Call of the Haunted
Ceasefire
Crush Card Virus
Exchange of the Spirit
Magic Cylinder
Reckless Greed
Ring of Destruction
Torrential Tribute

Semi-Limited

Makyura the Destructor
Manticore of Darkness
Marauding Captain
Morphing Jar #2
Creature Swap
Nobleman of Crossout
Reinforcement of the Army

Notably:
Cyber Jar
Fiber Jar
Magical Scientist
Butterfly Dagger – Elma
Confiscation
Painful Choice
The Forceful Sentry
Sixth Sense
Last Turn

should be legal to play, but these cards are not obtainable in Master Duel at the moment. Also, the powerful cards that have received erratum over the years obviously play with their most updated text.

The following loaner Decks will be available for the event:

☆1 Onslaught of the Gears

“Difficulty level ☆1
A Machine Deck that utilizes “Gadget” monsters. Since cards in your hand don’t get depleted easily, it’s easier to activate cards like “Raigeki Break.” Use cards such as Traps Cards to deal with powerful monsters.”

☆2 Power of Fusion

“Difficulty level ☆2
A Deck based around powerful Fusion Monsters. “King of the Swamp” can serve as a substitute for 1 Fusion Material Monster and also has an effect to add “Polymerization” to your hand. Determine the best use for each card and control the battlefield!”

☆3 Black Flame Dragon

“Difficulty level ☆3
A Deck that uses “Horus the Black Flame Dragon LV8” as its ace card. “Horus the Black Flame Dragon LV8” has an effect to negate the activation of a Spell Card, and destroy it. Combine it with “Royal Decree” which negates the effect of a Trap Card to create a powerful lineup. Hinder your opponent’s moves and secure a steady victory!”