Labyrinth Builder deck to beat/farm Roaring Rex Lvl 40

Duel Links deck, Roaring Rex farming, Labyrinth Builder, cheap deck, easy deck.
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update 12/09/2017
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Rex Lvl 30
Rex Lvl 30
Rex Lvl 40
Rex Lvl 40


Uses Labyrinth Wall to stall until the final turn, like every other Lab Builder deck. Add spell and trap cards that can immediately destroy Solidarity as soon as it is activated and Anti-Magic Arrows to prevent Jurrac Impact, after that you are guaranteed to win.

Score7,000 - 8,000
SkillLabyrinth Builder
Essential cards

Example deck

The Fiend MegacyberGravekeeper's VassalShard of GreedShard of GreedTwisterTwister
Union AttackUnion AttackAnti-Magic ArrowsShield & SwordSecret Pass to the TreasuresMagic Jammer
Wild TornadoWild TornadoGood Goblin HousekeepingGood Goblin HousekeepingGood Goblin HousekeepingJar of Greed
Jar of GreedJar of Greed----

Set skill

[Skill] descriptionUser
Labyrinth Builder
Shuffle 2 cards from your hand into the Deck to create "Labyrinth Wall" on your side of the field. This skill can only be used once per Duel.

Paradox Brothers


How to use

Activate Lab Builder

Use Labyrinth Builder immediately at the start of the duel, and stall with Labyrinth Wall. prioritize returning last turn cards when using Labyrinth Builder.

Stop Solidarity

Solidarity is one of the problematic cards you will encounter when farming Roaring Rex Raptor. With Solidarity Rex could get his monsters to above 3000 attack to destroy Labyrinth Wall, so we need to use cards that will immediately destroy his Solidarity after activation.


  • Use draw cards to deck out quicker than Rex and finish the duel earlier.
  • This will also help you get cards that can destroy Solidarity in case you didn't draw any earlier in the duel.
  • Prioritize returning last turn cards to the deck when using Good Goblin Housekeeping.
  • Do not activate Shard of Greed if you have less than 4 cards in your deck.

Final Turn

Other useful cards

Ritual Foregone
Ritual Foregone
This and a Ritual monster can be used in place of The Fiend Megacyber.
Can be used to destroy Solidarity. You however have to have a card like Windstorm of Etaqua to defend your Lab in a turn when Rex activates the continuous spell.
Forced Ceasefire
Forced Ceasefire
Can be used to replace Anti-Magic Arrows.
Legacy of Yata-Garasu
Legacy of Yata-Garasu
Practically the same as Jar of Greed since you will almost never get the second effect off.
Spell Purification
Spell Purification
You can destroy Rex's Solidariy by using this trap card. Can be activated during Rex's turn.


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