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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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
H card selleven
Who wants this skill?
This deck guarantees 8 rewards every time, unless you serious screw up. Summon the Labyrinth turn one and use the Rain of Mercy and Golden Ladybug cards to get at least 9500 LP. Use Cost Down to fill your board with 3 Labyrinth Walls in defense. Use 1 Pot of Benevolence to refill Mai's deck so she doesn't deck out. Use the remaining Pots to either stall to get your LP high enough or return an accidentally discarded piece of the last-turn combo into the deck. On the last turn, play Double Summon, Winged Dragon of Ra, Gravekeeper's Vassal, Secret Pass to the Treasure, and Union Attack.

You can replace Pot of Benevolence with card draw spells, but you risk losing them if Mai gets an Amazoness Sage out on the field. You can use other LP generation cards, but with this setup you only need Golden Ladybug to proc 5 times before you can use the 3 Rain of Mercy cards to reach 9500 LP.

2000 (win)
+1000 (100 LP left from Ra's effect)
+500 (using Ra)
+200 (Ra is prismatic)
+3000 (10k damage)
+400 (spells and tributes
+1000 (using a god card)
= 8100
<< Anonymous(Robin Lionheart)
Anonymous Reply
*You can get a third one

(You get 2 copies from Mokuba, actually)
<< Anonymous(Virtus)
Robin Lionheart Reply
My version:

1 The Winged Dragon of Ra
3 Skelengel [Ultimate Rising R]
2 Golden Ladybug (don't have 3)
3 Rai-Mei [Neo-Impact N]
2 Labyrinth Wall
3 Dian Keto the Cure Master [Tea SR reward]
1 Shooting Star Bow - Ceal [Neo-Impact SR]
2 Ancient Rules [level up Mokuba]
3 Solemn Wishes [Tea SR reward]

Pull ladybugs first with Rai-Mei. Drop Wishes after Mai fills board so she probably won't play Sage.
<< Anonymous(Robin Lionheart)
Robin Lionheart Reply
Leave a monster zone open for Mai to attack Rai-Mei and Skelengels. On the last turn, Ancient Rules out the third wall and tribute summon Ra. EZPZ.
<< Anonymous(Virtus)
Anonymous Reply
You could use ancient rules over cost down
Harpy queen might come on december
<< Anonymous
Anonymous Reply
or maybe when Carly Carmine is released
a bit difficult to farm :o
<< Anonymous
Anonymous Reply
A bit? She's VERY difficult to farm.....
<< Anonymous
Anonymous Reply
The most EASIEST to farm.
<< Anonymous
Anonymous Reply
Nope, a lot of characters are easier to farm than Mai.

Just to name a few: Yusei, Tea, Odion, Joey, Bastion, all are easier to farm than Mai.
Angry girl :V
How to farm? Fur Hire?

- Summon asap, Wiz, Sage FH in deffense position.
- While stalling, try to deck out as quickly as possible with your draw effects (Bladesman FH + FH monster).

- During you final turn, you need 2 Wiz, sage FH in attack position -> active S&S. Summon Vassal-> secret pass on vassal -> 2X Union attack -> direct attack.
<< Anonymous
Anonymous Reply
Sorry, Wrong SS.
Is there no deck that is f2p that doesn't require wasting gems?
<< Anonymous
Anonymous Reply
Ultimate Ancient Gear Golem deck (99% winrate, 6-7k pts)

-Summon asap, stall long enough for Gravity blaster to boost his attack to well over 10k, (he deals damage through defense penetration)
-You need 11500 attack if she has a high defense amazon down, or 10300 attack if she has the paladin down
-Be mindful that you will be forced to attack the tiger if he's there, so if you have a gear beast or other golem in your hand, in the last turn you can summon it to destroy him and then attack the paladin if she's there (if it will help you get the 10k damage)

2x Ancient Gear Golem
1x King of the Swamp
1x Ancient Gear Box
3x Ancient Gear beasts
2x Ancient Gear Soldier
2x Gravity Blaster
2x EC
2x Polymerisation
1x Bolstering wind (get rid of the amazon that destroys a spell/trap, or use it in the last stage to get an extra boost)
1x Floodgate Trap hole
1x Mirror Wall
1x Impenetrable Defense
1x Draining Shield
<< Anonymous
Anonymous Reply
if you can, save Floodgate trap hole for the amazon that destroys a spell/trap card when she's summoned
Anonymous No. 2
Labirynth Builder farm deck is reliable and easy to use.
But, has anyone else noticed that Mai will sometimes attack into the Wall for no reason and 🔥?
<< Anonymous(Anonymous No. 2)
Anonymous Reply
Really? That's odd. I only get her attacking it twice with Sage if I have set cards and then stopping once her LP are too low.
<< Anonymous(Anonymous No. 2)
Anonymous Reply
Yea. I just got my third Swordswoman. It happened to me when I used my extrapoint boosted twice so it wasted.. But satisfied now. I used labyrinth builder, reliable.
10 duels with more 7000k and neither SR. 10 duels against Jessie: 7 UR (1 reflective) and 7 SR (2 glossy). Nice work Konami declining the rate of Mai. I`m thinking why... rats.
<< Anonymous
Anonymous Reply
I'm veteran player and I can tell you that's not the case.

Drop rate of LD in DM has always been freaking low. I guess konami raise the drop rate for GX after players file their complaints.

P/s: I got my third sage by SR ticket last year, then she drop her 4th... Same to weevil's cards.
<< Anonymous
Anonymous Reply
Dont agree. It`s really strange and this is not the one player who I was farming farming. When I farmed Joey, Rex, Yugi and Tea in overall I got as minimum 2 or 3 SR in 5 duels.

Commens and feedback


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