L50 Paradox Brothers Unhappy Girl Lockdown (Skilless)

Deck by Mournful
Deck Overview
Deck Consistency
Pack Expense
Farm Expense
Card Trader Expense


Deck Skill
Character Skill
Can be used only once after starting hands are dealt. Reveal and redraw your starting hand. Your first Draw will be skipped if you use this Skill.
Deck Build
3 5 5 9
Monsters: 9
Spells: 3
Traps: 10
Monster Card
Card Rarity Quantity
Summoner of Illusions
ATK: 800 DEF: 900

FLIP: Tribute 1 other monster, and if you do, Special Summon 1 Fusion Monster from your Extra Deck. Destroy that Fusion Monster during the End Phase of this turn.

UR 1
Gravekeeper's Vassal
ATK: 700 DEF: 500

Any battle damage this card inflicts to your opponent is treated as effect damage instead.

R 1
The Unhappy Girl
ATK: 400 DEF: 300

While this card is in face-up Attack Position on the field, this card is not destroyed as a result of battle. (Damage calculation is applied normally.) A monster that battled with this card cannot change its battle position, except with a card effect, or attack while this card is in face-up Attack Position on the field.

R 3
ATK: 1400 DEF: 1200

When this card is destroyed by battle and sent to the Graveyard, you can add 1 Level 2 or lower LIGHT monster from your Deck to your hand.

N 2
Spell Card
Card Rarity Quantity
Union Attack
Union Attack
Union Attack

Target 1 face-up monster you control; add up the total ATK of all other face-up Attack Position monsters you currently control, then during the Battle Phase of this turn only, the monster gains that much ATK, but cannot inflict battle damage to your opponent, also other face-up Attack Position monsters cannot attack.

SR 2
Secret Pass to the Treasures

Select 1 face-up monster with an ATK equal to 1000 points or less on your side of the field. During the turn this card is activated, the selected monster can attack your opponent's Life Points directly.

N 1
Trap Card
Card Rarity Quantity
The Golden Apples

When you take battle damage while you control no monsters: Gain LP equal to the battle damage you took, and if you do, Special Summon 1 "Malus Token" (Fiend-Type/DARK/Level 1/ATK ?/DEF ?). Its ATK and DEF are each equal to the amount of LP you gained by this effect.

SR 3
Trap Jammer

When your opponent activates a Trap Card during the Battle Phase: Negate the activation, and if you do, destroy it.

R 1
Nutrient Z

This card can only be activated during your opponent's Damage Step. During this turn, if you take Battle Damage of 2000 points or more, increase your Life Points by 4000 points before the damage is subtracted from your Life Points.

N 3
Enchanted Javelin

Increase your Life Points by the ATK of 1 opponent's attacking monster.

N 3
Extra Deck
Monster Card
Card Rarity Quantity
Blue-Eyes Ultimate Dragon
ATK: 4500 DEF: 3800

"Blue-Eyes White Dragon" + "Blue-Eyes White Dragon" + "Blue-Eyes White Dragon"

UR 1
Master of Oz
Master of Oz
Master of Oz
ATK: 4200 DEF: 3700

"Big Koala" + "Des Kangaroo"

UR 1
Draw Simulator
Packs to pull to build this deck
Deck Strengths
  • Skill-less!
  • Straightforward and simple to pilot
  • Not extremely expensive; The Golden Apples can be replaced with other cards (see below)
  • Reasonably consistent
Deck Weaknesses
  • Can be overwhelmed by enormous ATK monsters with unlucky draws
  • No room for Fusion/Ritual Summons to boost Assessment Score
  • Possibility of Summoner of Illusions (or Mystical Beast of Serket) and Trap Jammer being last card
Deck Summary


Paradox's Level 50 deck runs significantly more threatening cards than the Level 40 deck. While it is still susceptible to Unhappy Girl Lockdown, we must make some modifications from the Level 40 version to address the additional threats of enormously high ATK monsters and Widespread Ruin. In order to address the high ATK monsters, we will be running a plethora of defensive healing traps, allowing us to avoid attacking and instead letting Paradox attack into The Unhappy Girl. This also prevents losing monsters to Widespread Ruin, and has the added benefit of being Skilless, since you do not need Holy Guard to attack into Paradox. 

What is Unhappy Girl Lockdown?

If you are unfamiliar with The Unhappy Girl farm decks, the basic premise is using The Unhappy Girl's effect to prevent your opponent's monsters from being able to attack or change battle position, rendering them useless. You can also search The Unhappy Girl via Rai-mei's effect if you do not draw The Unhappy Girl in your starting hand. This lockdown should be maintained until the final turn when you can perform Special Summons combined with either Gravekeeper's Vassal or Piranha Army to deal over 10k damage to your opponent.

How to Play

The deck is very straightforward to pilot; once you draw The Unhappy Girl, summon her and keep her in attack position, while protecting her with defensive Traps such as Enchanted Javelin and Nutrient Z. Make sure to keep enough defensive Traps Set to be safe without completely clogging up your backrow; you'll need space to play Spells/Traps later. If you do not start with The Unhappy Girl, set Rai-mei to activate her effect and allow her to be destroyed by battle, allowing you to search The Unhappy Girl from your deck. Make sure to only keep 1 copy of The Unhappy Girl on the field at all times (unless you're using Mystical Beast Serket); you'll need the other two Monster Zones for your last turn. If you open up with The Golden Apples and no copies of The Unhappy Girl, set The Golden Apples and summon the Malus Token from taking Battle Damage in defense position to stall until you can draw The Unhappy Girl. If you do end up activating The Golden Apples, make sure you destroy them before your final turn by trading 1-for-1 with the original monster you attacked; chances are it will be destroyed with Widespread Ruin anyways. Note that Paradox can still get over the Malus Token using Riryoku or Magnum Shield.

End Game

On your second to last turn, Set Summoner of Illusions (or Tribute Summon Mystical Beast of Serket if you're running that) and Trap Jammer if you haven't already. On your final turn, Normal Summon Gravekeeper's Vassal in your last remaining monster zone, Flip Summon Summoner of Illusions to Special Summon Blue-Eyes Ultimate Dragon or Master of Oz (or use Mystical Beast of Serket and Temple of Kings' effects), activate Secret Pass to the Treasure and both copies of Union Attack on Gravekeeper's Vassal, and attack directly with Gravekeeper's Vassal for over 10k Effect Damage. If Paradox activates Widespread Ruin in response to your direct attack, negate it with Trap Jammer.

Note: the recommended skill for this deck is Restart, as it will provide the highest chance of starting with The Unhappy Girl or The Golden Apples alongside defensive traps. This is not required, however, and you can run this deck with no skill if you're looking to farm skills or other characters. It will only give you a boost to consistency. Other viable consistency boosting skills include Destiny Draw, Duel, standby!, and Grit. 

Core Cards
Card Explanation

The Unhappy Girl's effect prevents any monster it battles with from declaring an attack or switching its position and prevents it from being destroyed by battle as long as it remains in face-up attack position, making it one of the best lockdown cards in the game. Instead of attacking into our opponent with Holy Guard as per usual, we will instead allow Paradox to reach lethal damage and attack into The Unhappy Girl, then negate their attack with traps like Enchanted Javelin and Nutrient Z. They will not attack into The Unhappy Girl unless they can deal lethal damage, which should be rather quick since they start with Gate Guardian. 

Try to run 3 copies for consistency.

Rai-Mei's effect allows you to search for a Level 2 or lower Light Monster when destroyed by battle. This allows us to search for The Unhappy Girl if we open with Rai-Mei. Unlike standard Unhappy Girl Lockdown, Rai-Mei is a lower priority here since even taking 1 turn to draw The Unhappy Girl can be too much, since Paradox's monsters have such high ATK, and as such the default decklist replaces 1 copy in favor for The Golden Apples.

Run 2-3 copies depending on personal preference.

The Golden Apples heals any battle damage you took from a direct attack and summons a Malus Token with the same ATK/DEF as the damage you took. Note that this only applies to direct attacks, and heals you after you take the damage, so if you would die to the attack, you will lose the duel. This Malus Token can be placed in defense position in order to stall until you draw The Unhappy Girl.

Try to run 3 copies for consistency.

Enchanted Javelin increased your LP by the ATK of an attacking monster. This effectively negate their damage while allowing the attack to still go through, which means The Unhappy Girl's effect will still apply. 

Try to run 3 copies for consistency.

Nutrient Z increases your LP by 4000 when you are about to take 2000 or more battle damage. This effectively negates the damage from most attacks while allowing the attack to still go through, which means The Unhappy Girls' effect will still apply. This will not negate the damage from Magnum Shield Gate Guardian's attacks. 

Try to run 3 copies for consistency.

Trap Jammer negates an opponent's Trap card during the Battle Phase. Since Widespread Ruin can only be activated in response to an attack, which happens in the Battle Phase, this will always be able to negate Widespread Ruin. This is to ensure our final attack goes through.

Only 1 copy is needed

Gravekeeper's Vassal's effect converts all Battle Damage to Effect Damage, which combos well with Union Attack. In your final turn before you deck out, Normal Summon Gravekeeper's Vassal and activate Secret Pass to the Treasures and 2 Union Attack to deal 10k Effect Damage directly. 

Only 1 copy is needed.

Secret Pass to the Treasures allows 1 monster with 1000 ATK or less to attack your opponent directly. This will be used on Gravekeeper's Vassal on your final turn. 

Only 1 copy is needed.

Union Attack

Union Attack increases 1 monsters ATK during the Battle Phase by the combined ATK of your other monsters at the cost of the other monsters not being able to attack and the negation of battle damage. This condition can be ignored due to Gravekeeper's Vassal's effect.

2 copies is required to reach 10k damage; you can also run 1 copy with Spell Reclamation.

Summoner of Illusions allows you to Special Summon a monster from your Extra Deck when Flip summoned by Tributing one other monster. This allows us to get a BEUD or Master of Oz on the field easily on our last turn.

Only 1 copy is needed.

Replacement/Tech Cards
Card Explanation

Piranha Army's effect doubles any Battle Damage dealt when attacking directly. If you don't own Union Attack, run this instead of Gravekeeper's Vassal. Make sure to run this with Gift of the Martyr instead of Union Attack. Note that you'll receive 1000 less Assessment Score.

Gift of the Martyr

Gift of the Martyr sends one monster you own to the Graveyard to add its original ATK to another monster. If you don't own Union Attack, run this instead of Union Attack.

Paralyzing Potion can be an effective way to lock down Gate Guardian early without killing Paradox like Mask of the Accursed. Note that it can be destroyed by De-Spell.

Pot of Benevolence allows you to shuffle 2 cards from either players' Graveyard into their respective decks. This allows you to ensure Summoner of Illusions and Trap Jammer are not your last cards.

Crystal Seer excavates two cards and lets you add one to the hand and place the other on the bottom of the deck. This helps search for The Unhappy Girl or defensive traps and ensures Summoner of Illusions and Trap Jammer are not the last cards.

Mystical Beast of Serket can be used in conjunction with Temple of Kings to replace Summoner of Illusions. The concept is the same - Special Summon a huge Fusion monster from your Extra deck - but Serket gives you extra points in the form of a Tribute Summon. However, it also requires 2 cards whereas Summoner of Illusions requires 1, which will hurt the deck's consistency.