Created by: YGO Mod (20517634)

Created On: 04/20/2026

The Unsealed Forbidden Door

Need 22 UR

UR Rarity
Armored Core1 card
UR Rarity
B.E.S. Big Core MK-31 card
UR Rarity
B.E.S. Blaster Cannon Core1 card
 Rarity
B.E.S. Derringer Core2 card
UR Rarity
Machina Fortress1 card
 Rarity
Machina Ruinforce1 card
 Rarity
Machina Unclaspare1 card
 Rarity
Super B.E.S. Metal Slave2 card
 Rarity
Therion "King" Regulus1 card
 Rarity
Vic Viper Type-L1 card
 Rarity
Mereologic Aggregator2 card
 Rarity
Boss on Parade2 card
UR Rarity
Machina Redeployment3 card
 Rarity
Ultimate Slayer3 card

Main: 30 Extra: 9

UR Rarity
Armored Core
UR Rarity
Armored Core
Armored Core
4
Armored Core
  • ATK:

  • 1300

  • DEF:

  • 2000


(This card is also always treated as a "B.E.S." card) If only your opponent controls a monster, you can Special Summon this card (from your hand).


UR Rarity
B.E.S. Big Core MK-3
UR Rarity
B.E.S. Big Core MK-3
B.E.S. Big Core MK-3
LIGHT 8
B.E.S. Big Core MK-3
  • ATK:

  • 2700

  • DEF:

  • 1900


If your opponent controls a monster and you control no monsters, you can Special Summon this card (from your hand) in Defense Position. If this card is Normal or Special Summoned: Place 3 counters on this card. Cannot be destroyed by battle. At the end of the Damage Step, if this card battled: Remove 1 counter from this card. If you cannot, destroy it. You can banish this card from your Graveyard; shuffle all "B.E.S." monsters from your Graveyard into the Deck.


UR Rarity
B.E.S. Blaster Cannon Core
UR Rarity
B.E.S. Blaster Cannon Core
B.E.S. Blaster Cannon Core
EARTH 9
B.E.S. Blaster Cannon Core
  • ATK:

  • 2500

  • DEF:

  • 3000


If your opponent controls more monsters than you do, you can Special Summon this card (from your hand). You can only Special Summon "B.E.S. Blaster Cannon Core" once per turn this way. If this card is Normal or Special Summoned: Place 3 counters on this card. Cannot be destroyed by battle. At the end of the Damage Step, if this card battled: Remove 1 counter from this card. If you cannot, destroy it.


 Rarity
B.E.S. Derringer Core
 Rarity
B.E.S. Derringer Core
B.E.S. Derringer Core
LIGHT 10
B.E.S. Derringer Core
  • ATK:

  • 1900

  • DEF:

  • 3000


You can reveal 1 other "B.E.S." monster in your hand; Special Summon this card from your hand, then place 3 counters on this card. During the Main Phase (Quick Effect): You can remove 1 counter from this card and activate 1 of these effects; ● Add 1 "Boss Rush" or 1 Spell/Trap that mentions it, from your Deck to your hand. ● Special Summon 1 Level 9 or lower "B.E.S." monster from your GY. You can only use each effect of "B.E.S. Derringer Core" once per turn.


 Rarity
B.E.S. Derringer Core
 Rarity
B.E.S. Derringer Core
B.E.S. Derringer Core
LIGHT 10
B.E.S. Derringer Core
  • ATK:

  • 1900

  • DEF:

  • 3000


You can reveal 1 other "B.E.S." monster in your hand; Special Summon this card from your hand, then place 3 counters on this card. During the Main Phase (Quick Effect): You can remove 1 counter from this card and activate 1 of these effects; ● Add 1 "Boss Rush" or 1 Spell/Trap that mentions it, from your Deck to your hand. ● Special Summon 1 Level 9 or lower "B.E.S." monster from your GY. You can only use each effect of "B.E.S. Derringer Core" once per turn.


SR Rarity
Jizukiru, the Star Destroying Kaiju
SR Rarity
Jizukiru, the Star Destroying Kaiju
Jizukiru, the Star Destroying Kaiju
LIGHT 10
Jizukiru, the Star Destroying Kaiju
  • ATK:

  • 3300

  • DEF:

  • 2600


You can Special Summon this card (from your hand) to your opponent's field in Attack Position, by Tributing 1 monster they control. If your opponent controls a "Kaiju" monster, you can Special Summon this card (from your hand) in Attack Position. You can only control 1 "Kaiju" monster. When a card or effect is activated that targets exactly 1 card (and no other cards) (Quick Effect): You can remove 3 Kaiju Counters from anywhere on the field; negate that effect, and if you do, you can destroy 1 card on the field.


SR Rarity
Machina Citadel
SR Rarity
Machina Citadel
Machina Citadel
EARTH 10
Machina Citadel
  • ATK:

  • 3000

  • DEF:

  • 2500


Cannot be Normal Summoned/Set. Must be Special Summoned by a card effect. (Quick Effect): You can target 1 Machine monster you control; destroy that Machine monster and all monsters your opponent controls with ATK less than or equal to it. If a face-up EARTH Machine monster(s) you control, except "Machina Citadel", is destroyed by battle or card effect while this card is in your GY: You can Special Summon this card. You can only use each effect of "Machina Citadel" once per turn.


UR Rarity
Machina Fortress
UR Rarity
Machina Fortress
Machina Fortress
EARTH 7
Machina Fortress
  • ATK:

  • 2500

  • DEF:

  • 1600


You can discard Machine monster(s) whose total Levels equal 8 or more, then Special Summon this card (from your hand or GY). If this card is destroyed by battle and sent to the GY: Target 1 card your opponent controls; destroy that target. Before resolving an opponent's monster effect that targets this face-up card, look at your opponent's hand and discard 1 card from their hand.


 Rarity
Machina Ruinforce
 Rarity
Machina Ruinforce
Machina Ruinforce
DARK 10
Machina Ruinforce
  • ATK:

  • 4600

  • DEF:

  • 4100


Cannot be Normal Summoned/Set. Must be Special Summoned (from your GY) by banishing Machine monsters from your GY whose total Levels equal 12 or more. When your opponent activates a card or effect during the Battle Phase (Quick Effect): You can pay half your LP; negate that activation, and if you do, halve your opponent's LP. If this card is destroyed by battle or card effect: You can Special Summon up to 3 of your banished "Machina" monsters, whose total Levels equal 12 or less. You can only use each effect of "Machina Ruinforce" once per turn.


 Rarity
Machina Unclaspare
 Rarity
Machina Unclaspare
Machina Unclaspare
DARK 4
Machina Unclaspare
  • ATK:

  • 1800

  • DEF:

  • 800


If this card is added to your hand, except by drawing it: You can Special Summon it, also you cannot Special Summon for the rest of this turn, except Machine monsters. If this card is Normal or Special Summoned: You can send 1 "Machina" monster from your Deck to the GY, except "Machina Unclaspare". You can only use each effect of "Machina Unclaspare" once per turn.


 Rarity
Super B.E.S. Metal Slave
 Rarity
Super B.E.S. Metal Slave
Super B.E.S. Metal Slave
DARK 11
Super B.E.S. Metal Slave
  • ATK:

  • 3100

  • DEF:

  • 3100


You can send up to 5 Level 10 or lower "B.E.S." monsters with different names from your hand and/or Deck to the GY; Special Summon this card from your hand, then place counters on this card equal to the number sent to the GY to activate this effect. You can only use this effect of "Super B.E.S. Metal Slave" once per turn. Once per Chain (Quick Effect): You can remove 1 counter from this card, then target 2 face-up cards on the field, including 1 "B.E.S." monster you control; destroy them.


 Rarity
Super B.E.S. Metal Slave
 Rarity
Super B.E.S. Metal Slave
Super B.E.S. Metal Slave
DARK 11
Super B.E.S. Metal Slave
  • ATK:

  • 3100

  • DEF:

  • 3100


You can send up to 5 Level 10 or lower "B.E.S." monsters with different names from your hand and/or Deck to the GY; Special Summon this card from your hand, then place counters on this card equal to the number sent to the GY to activate this effect. You can only use this effect of "Super B.E.S. Metal Slave" once per turn. Once per Chain (Quick Effect): You can remove 1 counter from this card, then target 2 face-up cards on the field, including 1 "B.E.S." monster you control; destroy them.


 Rarity
Therion "King" Regulus
 Rarity
Therion "King" Regulus
Therion "King" Regulus
EARTH 8
Therion "King" Regulus
  • ATK:

  • 2800

  • DEF:

  • 1600


You can only use each of the following effects of "Therion "King" Regulus" once per turn. ● You can target 1 "Therion" monster or 1 Machine monster in your GY; Special Summon this card from your hand, and if you do, equip that monster to this card. ● When your opponent activates a card or effect (Quick Effect): You can send 1 "Therion" Monster Card from your hand or face-up field to the GY; negate that effect. A "Therion" monster equipped with this card gains 700 ATK, also it can activate the 2nd effect listed above as if it were "Therion "King" Regulus".


 Rarity
Vic Viper Type-L
 Rarity
Vic Viper Type-L
Vic Viper Type-L
LIGHT 4
Vic Viper Type-L
  • ATK:

  • 1200

  • DEF:

  • 800


At the start of your Battle Phase: You can activate 1 of these effects; ● Special Summon 1 Machine monster from your hand. ● Send 1 Level 4 or lower LIGHT Machine monster from your Deck to the GY. If this card is destroyed: You can target 1 LIGHT Machine monster in your GY; Special Summon it, and if you Special Summoned a monster with 1200 or less original ATK, it gains 1200 ATK. You can only use each effect of "Vic Viper Type-L" once per turn.


SR Rarity
Machina Gearframe
SR Rarity
Machina Gearframe
Machina Gearframe
EARTH 4
Machina Gearframe
  • ATK:

  • 1800

  • DEF:

  • 0


When this card is Normal Summoned: You can add 1 "Machina" monster from your Deck to your hand, except "Machina Gearframe". Once per turn, you can either: Target 1 Machine monster you control; equip this card to that target, OR: Unequip this card and Special Summon it. If the equipped monster would be destroyed by battle or card effect, destroy this card instead.


SR Rarity
B.E.F. Zelos
SR Rarity
B.E.F. Zelos
B.E.F. Zelos
Spell Field
B.E.F. Zelos

    When this card is activated: You can add 1 "Boss Rush" from your Deck to your hand. "B.E.S." monsters you control gain 500 ATK/DEF, your opponent cannot target them with card effects, also they cannot be destroyed by your opponent's card effects. Once per turn: You can Special Summon 1 "B.E.S." monster from your hand. If a "B.E.S." monster(s) is Normal or Special Summoned to your field: Place 1 counter on it.


     Rarity
    Boss on Parade
     Rarity
    Boss on Parade
    Boss on Parade
    Spell Continuous
    Boss on Parade

      When this card is activated: Add 1 "B.E.S." monster from your Deck to your hand. Once per turn, during your Main Phase: You can destroy 1 monster in your hand or field, and if you do, Special Summon 1 LIGHT Machine monster with 1200 ATK and 1000 or less DEF from your Deck to either field. You can banish this card from your GY; place 1 "Boss Rush" from your Deck or GY, face-up on your field. You can only activate 1 "Boss on Parade" per turn.


       Rarity
      Boss on Parade
       Rarity
      Boss on Parade
      Boss on Parade
      Spell Continuous
      Boss on Parade

        When this card is activated: Add 1 "B.E.S." monster from your Deck to your hand. Once per turn, during your Main Phase: You can destroy 1 monster in your hand or field, and if you do, Special Summon 1 LIGHT Machine monster with 1200 ATK and 1000 or less DEF from your Deck to either field. You can banish this card from your GY; place 1 "Boss Rush" from your Deck or GY, face-up on your field. You can only activate 1 "Boss on Parade" per turn.


        R Rarity
        Boss Rush
        R Rarity
        Boss Rush
        Boss Rush
        Spell Continuous
        Boss Rush

          You cannot Normal Summon or Set. During the End Phase of the turn that a "B.E.S." monster or a "Big Core" is destroyed and sent to the Graveyard, you can Special Summon 1 "B.E.S." monster or 1 "Big Core" from your Deck.


          N Rarity
          Machina Defense Perimeter
          N Rarity
          Machina Defense Perimeter
          Machina Defense Perimeter
          Spell Continuous
          Machina Defense Perimeter

            While you control a Level 7 or higher Machine monster, your opponent's monsters cannot target Level 6 or lower Machine monsters you control for attacks, also your opponent cannot target them with card effects. If a face-up Machine monster(s) you control is destroyed by battle or card effect: You can target 1 Machine monster in your GY; add it to your hand. You can only use this effect of "Machina Defense Perimeter" once per turn.


            UR Rarity
            Machina Redeployment
            UR Rarity
            Machina Redeployment
            Machina Redeployment
            Spell Normal
            Machina Redeployment

              Activate 1 of these effects. ● Discard 1 card; add 2 "Machina" monsters with different names from each other from your Deck to your hand. ● Discard 1 "Machina" card; add 2 "Machina" cards with different names from each other from your Deck to your hand, except "Machina Redeployment". You can only activate 1 "Machina Redeployment" per turn.


              UR Rarity
              Machina Redeployment
              UR Rarity
              Machina Redeployment
              Machina Redeployment
              Spell Normal
              Machina Redeployment

                Activate 1 of these effects. ● Discard 1 card; add 2 "Machina" monsters with different names from each other from your Deck to your hand. ● Discard 1 "Machina" card; add 2 "Machina" cards with different names from each other from your Deck to your hand, except "Machina Redeployment". You can only activate 1 "Machina Redeployment" per turn.


                UR Rarity
                Machina Redeployment
                UR Rarity
                Machina Redeployment
                Machina Redeployment
                Spell Normal
                Machina Redeployment

                  Activate 1 of these effects. ● Discard 1 card; add 2 "Machina" monsters with different names from each other from your Deck to your hand. ● Discard 1 "Machina" card; add 2 "Machina" cards with different names from each other from your Deck to your hand, except "Machina Redeployment". You can only activate 1 "Machina Redeployment" per turn.


                   Rarity
                  Ultimate Slayer
                   Rarity
                  Ultimate Slayer
                  Ultimate Slayer
                  Spell Normal
                  Ultimate Slayer

                    Your opponent cannot activate monster effects in response to this card's activation. Send 1 monster from your Extra Deck to the GY, then target 1 monster your opponent controls with the same card type (Fusion, Synchro, Xyz, Pendulum, or Link); shuffle it into the Deck.


                     Rarity
                    Ultimate Slayer
                     Rarity
                    Ultimate Slayer
                    Ultimate Slayer
                    Spell Normal
                    Ultimate Slayer

                      Your opponent cannot activate monster effects in response to this card's activation. Send 1 monster from your Extra Deck to the GY, then target 1 monster your opponent controls with the same card type (Fusion, Synchro, Xyz, Pendulum, or Link); shuffle it into the Deck.


                       Rarity
                      Ultimate Slayer
                       Rarity
                      Ultimate Slayer
                      Ultimate Slayer
                      Spell Normal
                      Ultimate Slayer

                        Your opponent cannot activate monster effects in response to this card's activation. Send 1 monster from your Extra Deck to the GY, then target 1 monster your opponent controls with the same card type (Fusion, Synchro, Xyz, Pendulum, or Link); shuffle it into the Deck.


                        N Rarity
                        Appointer of the Red Lotus
                        N Rarity
                        Appointer of the Red Lotus
                        Appointer of the Red Lotus
                        Trap Normal
                        Appointer of the Red Lotus

                          Pay 2000 Life Points and reveal all cards in your hand. Look at your opponent's hand and select 1 card. Remove that card from play until your opponent's next End Phase.


                          N Rarity
                          Appointer of the Red Lotus
                          N Rarity
                          Appointer of the Red Lotus
                          Appointer of the Red Lotus
                          Trap Normal
                          Appointer of the Red Lotus

                            Pay 2000 Life Points and reveal all cards in your hand. Look at your opponent's hand and select 1 card. Remove that card from play until your opponent's next End Phase.


                            N Rarity
                            Appointer of the Red Lotus
                            N Rarity
                            Appointer of the Red Lotus
                            Appointer of the Red Lotus
                            Trap Normal
                            Appointer of the Red Lotus

                              Pay 2000 Life Points and reveal all cards in your hand. Look at your opponent's hand and select 1 card. Remove that card from play until your opponent's next End Phase.


                              SR Rarity
                              Mask of Restrict
                              SR Rarity
                              Mask of Restrict
                              Mask of Restrict
                              Trap Continuous
                              Mask of Restrict

                                Neither player can Tribute cards.


                                SR Rarity
                                Elder Entity N'tss
                                SR Rarity
                                Elder Entity N'tss
                                Elder Entity N'tss
                                LIGHT 4
                                Elder Entity N'tss
                                • ATK:

                                • 2500

                                • DEF:

                                • 1200


                                1 Synchro Monster + 1 Xyz Monster Must be Special Summoned (from your Extra Deck) by sending the above cards you control to the GY. (You do not use "Polymerization".) Once per turn: You can Special Summon 1 Level 4 monster from your hand. If this card is sent to the GY: You can target 1 card on the field; destroy it. You can only Special Summon "Elder Entity N'tss(s)" once per turn.


                                N Rarity
                                Fossil Machine Skull Wagon
                                N Rarity
                                Fossil Machine Skull Wagon
                                Fossil Machine Skull Wagon
                                EARTH 6
                                Fossil Machine Skull Wagon
                                • ATK:

                                • 1700

                                • DEF:

                                • 1500


                                1 Rock monster in your GY + 1 Level 5 or 6 monster Must first be Special Summoned with "Fossil Fusion". This card can make up to 2 attacks on monsters during each Battle Phase. When this card destroys an opponent's monster by battle: You can inflict 800 damage to your opponent. You can banish this card from your GY, then target 1 Spell/Trap on the field; destroy it. You can only use this effect of "Fossil Machine Skull Wagon" once per turn.


                                R Rarity
                                Fossil Warrior Skull Knight
                                R Rarity
                                Fossil Warrior Skull Knight
                                Fossil Warrior Skull Knight
                                EARTH 6
                                Fossil Warrior Skull Knight
                                • ATK:

                                • 2400

                                • DEF:

                                • 1100


                                1 Rock monster + 1 Level 5 or 6 monster Must first be Special Summoned with "Fossil Fusion". If this card attacks a Defense Position monster, inflict piercing battle damage. When this attacking card destroys a monster by battle: You can activate this effect; this card can make a second attack in a row. You can banish this card from your GY, then target 1 monster on the field; destroy it. You can only use this effect of "Fossil Warrior Skull Knight" once per turn.


                                R Rarity
                                Tri-Brigade Ferrijit the Barren Blossom
                                R Rarity
                                Tri-Brigade Ferrijit the Barren Blossom
                                Tri-Brigade Ferrijit the Barren Blossom
                                EARTH
                                Tri-Brigade Ferrijit the Barren Blossom
                                • ATK:

                                • 1600

                                • LINK-2

                                Link Arrow:

                                Left

                                Bottom-Left


                                2 Beast, Beast-Warrior, and/or Winged Beast monsters During your Main Phase: You can Special Summon 1 Level 4 or lower Beast, Beast-Warrior, or Winged Beast monster from your hand, also you cannot use monsters as Link Material for the rest of this turn, except Beast, Beast-Warrior, or Winged Beast monsters. If this card is sent to the GY: You can draw 1 card, then place 1 card from your hand on the bottom of the Deck. You can only use each effect of "Tri-Brigade Ferrijit the Barren Blossom" once per turn.


                                N Rarity
                                Tri-Brigade Rugal the Silver Sheller
                                N Rarity
                                Tri-Brigade Rugal the Silver Sheller
                                Tri-Brigade Rugal the Silver Sheller
                                EARTH
                                Tri-Brigade Rugal the Silver Sheller
                                • ATK:

                                • 2300

                                • LINK-3

                                Link Arrow:

                                Right

                                Bottom

                                Bottom-Right


                                2+ Beast, Beast-Warrior, and/or Winged Beast monsters During your opponent's Main Phase (Quick Effect): You can Special Summon 1 Level 4 or lower Beast, Beast-Warrior, or Winged Beast monster from your hand or GY, but negate its effects, also, return it to the hand during the End Phase. If this card is sent to the GY: You can make all monsters your opponent currently controls lose 300 ATK for each Monster Type you control, until the end of this turn. You can only use each effect of "Tri-Brigade Rugal the Silver Sheller" once per turn.


                                R Rarity
                                Golden Cloud Beast - Malong
                                R Rarity
                                Golden Cloud Beast - Malong
                                Golden Cloud Beast - Malong
                                LIGHT 6
                                Golden Cloud Beast - Malong
                                • ATK:

                                • 2200

                                • DEF:

                                • 1000


                                1 Tuner + 1+ non-Tuner monsters If this card is Special Summoned: You can increase or decrease its Level by 1. If this card is sent to the GY: You can target 1 face-up card your opponent controls; return it to the hand. You can only use this effect of "Golden Cloud Beast - Malong" once per turn.


                                R Rarity
                                Golden Cloud Beast - Malong
                                R Rarity
                                Golden Cloud Beast - Malong
                                Golden Cloud Beast - Malong
                                LIGHT 6
                                Golden Cloud Beast - Malong
                                • ATK:

                                • 2200

                                • DEF:

                                • 1000


                                1 Tuner + 1+ non-Tuner monsters If this card is Special Summoned: You can increase or decrease its Level by 1. If this card is sent to the GY: You can target 1 face-up card your opponent controls; return it to the hand. You can only use this effect of "Golden Cloud Beast - Malong" once per turn.


                                 Rarity
                                Mereologic Aggregator
                                 Rarity
                                Mereologic Aggregator
                                Mereologic Aggregator
                                DARK
                                Mereologic Aggregator
                                • ATK:

                                • 2600

                                • DEF:

                                • 3000


                                2+ Level 9 monsters If this card is Xyz Summoned: You can send 1 monster from your Extra Deck to the GY. You can target monsters in your GY, up to the number of materials this card has; detach materials from this card equal to the number of those targets in the GY, and if you do, attach those targets to this card. If this card is sent to the GY: You can target 1 face-up card on the field; negate its effects until the end of this turn. You can only use each effect of "Mereologic Aggregator" once per turn.


                                 Rarity
                                Mereologic Aggregator
                                 Rarity
                                Mereologic Aggregator
                                Mereologic Aggregator
                                DARK
                                Mereologic Aggregator
                                • ATK:

                                • 2600

                                • DEF:

                                • 3000


                                2+ Level 9 monsters If this card is Xyz Summoned: You can send 1 monster from your Extra Deck to the GY. You can target monsters in your GY, up to the number of materials this card has; detach materials from this card equal to the number of those targets in the GY, and if you do, attach those targets to this card. If this card is sent to the GY: You can target 1 face-up card on the field; negate its effects until the end of this turn. You can only use each effect of "Mereologic Aggregator" once per turn.




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