Created by: YGO Mod (20517634)
Created On: 04/20/2026
The Unsealed Forbidden Door
Main: 30 Extra: 9




LIGHT
8B.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.




EARTH
9B.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.




LIGHT
10B.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.




LIGHT
10B.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.




LIGHT
10Jizukiru, 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.




EARTH
10Machina 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.




EARTH
7Machina 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.




DARK
10Machina 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.




DARK
4Machina 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.




DARK
11Super 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.




DARK
11Super 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.




EARTH
8Therion "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".




LIGHT
4Vic 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.




EARTH
4Machina 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.




Spell
FieldB.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.




Spell
ContinuousBoss 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.




Spell
ContinuousBoss 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.




Spell
ContinuousMachina 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.




Spell
NormalMachina 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.




Spell
NormalMachina 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.




Spell
NormalMachina 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.




LIGHT
4Elder 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.




EARTH
6Fossil 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.




EARTH
6Fossil 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.




EARTHTri-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.




EARTHTri-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.




LIGHT
6Golden 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.




LIGHT
6Golden 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.




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.




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.




















