Labyrinth Builder (Catapult Turtle) to beat/farm Dr. Crowler Lvl 40

Activate the skill to summon Labyrinth Wall in Defense Position during the first turn. Your goal is stall with it, along with some support cards, until the final turn.

• The monsters with the highest base ATK are Ancient Gear Golem (3000 ATK), Ancient Gear Beast (2000), and Ancient Gear Knight (1800 ATK).
• Ancient Gear Factory andAncient Gear Tank can boost those monsters’ ATK up to 1500 points.
• Zero Gravity’s effect changes our Labyrinth Wall to Attack Position, leaving it vulnerable to attacks.
• Spell Gear and Ancient Gear Boxsearch for Crowler’s monsters and adds them to his hand, thereby thinning his deck.
• Crowler will only attack with monsters strong enough to break through Labyrinth Wall’s high DEF. Below is a table showing how much ATK is needed to do so.

To try and prevent these attacks, we use a combination of both Dimension Gate and Massivemorph. Dimension Gate’s effect would leave us wide open for a direct attack, but Massivemorph prevents his monsters from doing so. (Remember, Crowler will only attack with monsters strong enough to break through Labyrinth Wall’s high DEF.)

To counter the deck thinning from Spell Gear and Ancient Gear Box, we use our own: Planet Pathfinder, Good Goblin Housekeeping, and Jar of Greed.

• There are a total of 5 key cards: Catapult Turtle, Soul Exchange, Storm, and your two copies of Massivemorph. (See the Card Choice and Final Turn section for more information.)
• Apparently, Crowler does not tribute the monster that has been targeted by the effect of Massivemorph. Although, this has not been confirmed, so to be safe, activate it at the final turn.
• Do not set Soul Exchange if Storm has not been activated.

• If you haven’t already, activate both copies of Massivemorph, targeting the monster with the highest ATK on Crowler’s side of the field.
• Activate Stormto destroy Acidic Downpour and Dimension Gate (if active). If Dimension Gate was active and it is destroyed, it will bring back Labyrinth Wall onto your field.
• Tribute Summon Catapult Turtle, using Labyrinth Wall as tribute.
• Activate Soul Exchange, targeting the same monster Massivemorphwas used on.
• Activate Catapult Turtle’s effect, tributing the monster you targeted with Soul Exchange, to win the Duel.

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