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
DasVamp 2days ago
No Union Attack
Double Riryoku
Comeback Victory
<< Anonymous(DasVamp)
Anonymous 2days ago Reply
Anonymous 6days ago
TFW you use over 3000 green keys with average of 7000-8000 assessment and only get 1 swords woman and more than 4 of every other card
<< Anonymous
Anonymous 3days ago Reply
Screw you. I've been farming since May last year and still no Sage.
Anonymous 7days ago
any card that can replace union attack as I don't have a single copy of it.
<< Anonymous
Anonymous 6days ago Reply
You could run piranha army and gift of the maryt.
<< Anonymous
Anonymous 6days ago Reply
Thanks for suggesting.
I am going to go with (2) gift of the martyr (1) riryoku.
but seriously what is use of piranha army in a farming deck.
<< Anonymous
akubane 6days ago Reply
piranha is for the 10k damage. summon piranha, use pass, use riryoku, play gift or 2 and attack with double combat damage.
<< Anonymous
Anonymous 1days ago Reply
Not that I know of.... You COULD use a form of unity THEN use something along the lines of shield and sword/ojama country
Anonymous 14days ago

I used labyrinth to farm Mai

She attack the Labyrinth Wall using Amazoness Archer and suicide.

Why the hell did she do that? LMAO
Anonymous 16days ago
Sylvans Ra works. You just need to remove Fighting spirit.
<< Anonymous
Anonymous 16days ago Reply
And add arrival Rivals
Anonymous Sylvan Guy 20days ago
Sylvans with Ra. Yami Merricks "Power of the tributed" ability.

Stall until last cards in deck and then summon Ra + activate effect to have over 10,000 attack if you don't take any damage which is ez with Sylvans high attack units. Clear her field throughout the fight so she can't tribute summon.
BabaYaga 23days ago
I use cerberus deck with anti spell cards
Anonymous 27days ago
I usr lab. Builder to farm mai,it is 100% win cuz her monster can't reach 3000 atk. And special summon necrofear when her monster atk is 2200 or more then just finish it as you always did
<< Anonymous
Anonymous 27days ago Reply
Actually i use that deck to farm elegant mai
Anonymous 28days ago
In case people still looking for easy fa deck, you can easily farm her with Labyrinth Buider.
<< Anonymous
Anonymous 27days ago Reply
Ironically, you need to farm to get Lab Builder. Use Elements unite instead because she doesn't have anything against it at lvl 40.
<< Anonymous
Anonymous 27days ago Reply
Element united's deck is very bad if you don't recover your life point as fast as posible you could lost with amazoness archer since there are amazoness village it'll be useless to destroy her monster.
<< Anonymous
Anonymous 27days ago Reply
It's not as bad as you think. I managed to farm her a couple of times with Elements Unite.
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.
The Witchy Unicorn
I used my Gladiator beast deck to defeat her (3 consecutive wins)

yt/the witchy unicorn
<< Anonymous(The Witchy Unicorn )
The Witchy Unicorn Reply
They should definitely add this deck to the list
<< Anonymous(The Witchy Unicorn)
DaTaMagician 28days ago Reply
But that deck is not used to farm...
<< Anonymous(The Witchy Unicorn )
Anonymous 26days ago Reply
uhm what? you can use almost any deck to beat her... we want to farm her not just only win the duel

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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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