How to beat/farm Mai Valentine Lvl 40

This page notes level 40 Mai's deck, characteristics, and tips for defeating her.
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update 29/05/2017
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Lvl 40

Labyrinth Builder (7,000 - 8,000)

Gemini Elf Version

Legion the Fiend JesterGravekeeper's RecruiterGravekeeper's RecruiterGravekeeper's RecruiterGravekeeper's VassalGemini Elf
Gemini ElfGemini ElfDouble SummonUnion AttackUnion AttackShield & Sword
Wonder WandWonder WandWonder WandMagical MalletWhite Elephant's GiftWhite Elephant's Gift
Mooyan CurrySecret Pass to the Treasures----

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
Paradox Brothers


  • Gemini Elf can be replaced with Neo the Magical Swordsman or Mist Valley Watcher. Legion the Fiend Jester can be replaced by Blue Dragon Summoner.
  • Stall the entire game with Labyrinth Wall.
  • While stalling, try to deck out as quickly as possible with your draw effects.
  • Use Wonder Wand on your Gravekeeper's Recruiter or Blue Dragon Summoner, this way you can draw more cards from your deck and fetch another monster from your deck.
  • Use White Elephant's Gift to send Gemini Elf to your graveyard and draw 2 cards. Remember to keep at least 1 Gemini Elf in your hand for your final turn.
  • During you final turn, put Labyrinth Wall in attack position and then activate Shield and Sword before summoning Gemini Elf. Then use Double Summon to summon Gravekeeper's Vassal.
  • If you are using Mist Valley Watcher summon him first before using Shield and Sword.

Amazoness (7,000 - 8,000)

Amazoness PrincessAmazoness PrincessAmazoness PrincessAmazoness QueenSanga of the ThunderAmazoness Chain Master
Amazoness Chain MasterAmazoness Chain MasterAmazoness FighterAmazoness FighterAmazoness FighterGravekeeper's Vassal
Union AttackUnion AttackDownbeatDownbeatDownbeatSecret Pass to the Treasures
Amazoness OnslaughtSpirit Barrier----

Set Skill

[Skill] descriptionUser
Can be used only once after starting hands are dealt. Reveal and redraw your starting hand.
Bandit Keith
Bandit Keith

Click below for more details

Ojama (7k - 8k)

Essential cards
(Box reset)
No box reset neccessary

Example Deck

King of the SwampOjama BlueOjama BlueGravekeeper's VassalOjama BlackOjama Black
Ojama YellowOjama YellowOjama GreenOjama GreenUnion AttackUnion Attack
PolymerizationPolymerizationPolymerizationOjama CountrySecret Pass to the TreasuresJar of Greed
Jar of GreedJar of Greed-Ojama KingOjama KnightOjama Knight

Set skill

[Skill] descriptionUser
Can be used only once after starting hands are dealt. Reveal and redraw your starting hand.
Seto Kaiba
Seto Kaiba


  • Summon Ojama Knight or Ojama King as early as possible. They have enough defense to stall Mai's strongest monsters and with 0 attack Mai cannot use Amazoness Fighting Spirit to boost her attack.
  • After that just keep stalling until you deck out. Ojama Blue and Jar of Greed helps you get Ojamas out of your deck, King of the Swamp helps you search Polymerization in your deck. You can also use these cards to help fusion summon Ojama Knight earlier, if you have not yet.
  • During your final turn, have 2 face-up attack position Ojama Knight then use Ojama Country. Normal Summon Gravekeeper's Vassal then use Secret Pass to the Treasures and 2 Union Attack on him. Direct attack for over 9999 damage assessment.
  • Restart is only for consistency boosting. This deck can work without any skill, so you can use it for skill farming.

Labyrinth Builder (7k - 8k) [Past Version]

For in-depth guide, no Union Attack version, substitutes for cards you don't have, check the link below!

skillLabyrinth Builder
Essential cards
ExpenseVery low
(Box reset)

Union Attack (7k - 8k)

Thunder DragonThunder DragonThunder DragonGravekeeper's RecruiterGravekeeper's RecruiterGravekeeper's Recruiter
Gravekeeper's VassalFusion GateShard of GreedShard of GreedWonder WandWonder Wand
Union AttackUnion AttackShield & SwordSecret Pass to the TreasuresMooyan CurryJar of Greed
Jar of GreedJar of Greed---Twin-Headed Thunder Dragon

Unhappy Girl (6k -8k)

For in-depth guide, no Union Attack version, substitutes for cards you don't have, check the link below!

Obtainable score7,000-8,000
SkillHoly Guard, LP Boost α, Restart
Essential cardsThe Unhappy Girl

Union Attack (7k - 8k)

Mystical Beast of SerketGravekeeper's VassalThe Unhappy GirlThe Unhappy GirlThe Unhappy GirlRai-Mei
Rai-MeiRai-MeiUnion AttackTemple of the KingsSoul of the PureSoul of the Pure
Soul of the PureSecret Pass to the TreasuresCurse of AnubisWindstorm of EtaquaSpell ReclamationEnchanted Javelin
Enchanted JavelinEnchanted Javelin------Blue-Eyes Ultimate Dragon

Level 40 Mai's deck

Annoying cards

CardEffect Summary
Amazoness Tiger
Amazoness Tiger
This card can raise its ATK by up to 2100, must be destroyed first before you can target other Amazoness monsters on the field.
Amazoness Sage
Amazoness Sage
This card most likely survive the turn it attacks so setting a Trap/Spell makes difficult.
Amazoness Archer
Amazoness Archer
This card makes is hard for "Element Unites" deck to be viable in farming Mai. it can inflict 1200 of effect damage.


Cards Mai Lvl 40 drops


Hot New Top
Vsdani 30days ago
Mai skill:

Amazoness Assault!

Begin duel with "Amazoness Village" on the field. You can discard one "Amazoness" monster, return "Amazoness Village" from GY to your hand.

<< Anonymous(Anonymous )
Anonymous. Reply
There can only be one effect per skill you stupid moron.
If it's a field spell skill, that's all there is. You can't use a skill that gives a field spell and also allow you to bring that field spell back from the grave. Skills don't work like that in the game.
My Ojama Farm deck.
<< Anonymous(Mavado)
Mavado Reply
Extra deck is fairly obvious. Two Ojama Kings and three Ojama Knights.
It's so easy farm she with Ojamas, don't know why this site doesn't recomend it
<< Anonymous
Yo Mama Reply
go back to kindergarden and learn how to type my child
<< Anonymous
Anonymous Reply
post your Ojamas Farm deck please

La vieja confiable
I've been having good luck with this deck. It's not perfect and you only get around 3000-4000 in the assessment, but it is consistent.
I have found that this can be good for farming the LDs, but especially Mai, because she is mostly about attack increase and swarming you. But once you get too much more attack points then her, there is not much she can do about it.
Bring cards to destroy her spellcards and she can't use her strategy anymore
Me, Myself and I
If you set a Spell/Trap card on Lab Builder she will hit Lab Wall with Sage.
with this sillent magician deck you can farm mai, paradox, chazz, except alexis and keith :D
skill : restart
Someone needs to create more farm decks that can be used with any character
<< Anonymous
Anonymous Reply
ojama. just remember to put the field spell ojama country in the deck.
the good guy Online
this effect rekt my Element United set up to farm her *sad* The odd for her to have these two of field is 2 out of 12 monsters card she have so good luck fellow farmer lol

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Comments (updated every hour)

Lol how people hate syls becuase they whoop ur arse
Where are the new decks from the tier list? Too early to categorize?
the build is quite cheap. rush is a sr from a mini-box, you can get a wall for your dream ticket....
When could we use this card?
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