Created by: YGO Mod (20517634)
Created On: 04/26/2026
The Unsealed Forbidden Door
Main: 25 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.




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.




DARK
8Gizmek Orochi, the Serpentron Sky Slasher
ATK:
2450
DEF:
2450
If this card is in your hand or GY (Quick Effect): You can banish 8 cards from the top of your Deck face-down; Special Summon this card. You can banish 3 cards from your Extra Deck face-down, then target 1 face-up monster on the field; destroy it. You can only use 1 "Gizmek Orochi, the Serpentron Sky Slasher" effect per turn, and only once that 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.




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.




WIND
1Kiteroid
ATK:
200
DEF:
400
During damage calculation, if your opponent's monster attacks directly (Quick Effect): You can discard this card; you take no battle damage from that battle. During damage calculation, if your opponent's monster attacks directly (Quick Effect): You can banish this card from your Graveyard; you take no battle damage from that battle.




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
4Machina Possesstorage
ATK:
1600
DEF:
1500
If this card is Normal or Special Summoned: You can target 1 "Machina" monster in your GY, except "Machina Possesstorage"; Special Summon it in Defense Position, but it cannot activate its effects this turn. You can target 1 other "Machina" monster you control and 1 Spell/Trap your opponent controls; return them to the hand. You can only use each effect of "Machina Possesstorage" once per turn.




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
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
8Orbital Hydralander
ATK:
3000
DEF:
1500
Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by having 5 or more monsters in your GY, and no monsters in your GY with the same name. Once per turn (Quick Effect): You can send the top 3 cards of your Deck to the GY; destroy 1 card on the field. You must have at least 2 monsters in your GY, and no monsters in your GY with the same name, to activate and to resolve this effect.




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".




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.




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
QuickForbidden Droplet
Send any number of other cards from your hand and/or field to the GY; choose that many Effect Monsters your opponent controls, and until the end of this turn, their ATK is halved, also their effects are negated. In response to this card's activation, your opponent cannot activate cards, or the effects of cards, with the same original type (Monster/Spell/Trap) as the cards sent to the GY to activate this card. You can only activate 1 "Forbidden Droplet" per turn.




Spell
QuickForbidden Droplet
Send any number of other cards from your hand and/or field to the GY; choose that many Effect Monsters your opponent controls, and until the end of this turn, their ATK is halved, also their effects are negated. In response to this card's activation, your opponent cannot activate cards, or the effects of cards, with the same original type (Monster/Spell/Trap) as the cards sent to the GY to activate this card. You can only activate 1 "Forbidden Droplet" per turn.




Spell
QuickForbidden Droplet
Send any number of other cards from your hand and/or field to the GY; choose that many Effect Monsters your opponent controls, and until the end of this turn, their ATK is halved, also their effects are negated. In response to this card's activation, your opponent cannot activate cards, or the effects of cards, with the same original type (Monster/Spell/Trap) as the cards sent to the GY to activate this card. You can only activate 1 "Forbidden Droplet" per turn.




DARK
8Destiny HERO - Destroyer Phoenix Enforcer
ATK:
2500
DEF:
2100
1 Level 6 or higher "HERO" monster + 1 "Destiny HERO" monster Monsters your opponent controls lose 200 ATK for each "HERO" card in your GY. You can only use each of the following effects of "Destiny HERO - Destroyer Phoenix Enforcer" once per turn. (Quick Effect): You can destroy both 1 card you control and 1 card on the field. If this card is destroyed by battle or card effect: You can activate this effect; Special Summon 1 "Destiny HERO" monster from your GY during the Standby Phase of the next turn.




DARK
10Destiny HERO - Dusktopia
ATK:
3000
DEF:
3000
1 "Destiny HERO" Fusion Monster + 1 "Destiny HERO" monster If this card is Fusion Summoned: You can Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters from your hand or field as Fusion Material. Once per turn (Quick Effect): You can target 1 monster on the field; make it unable to be destroyed by battle or card effects, and if you do, neither player takes any battle damage from attacks involving that monster (these effects last until the end of this turn).




LIGHT
12Ultimate Crystal Rainbow Dragon Overdrive
ATK:
4000
DEF:
0
1 "Ultimate Crystal" monster + 7 "Crystal Beast" monsters Must be Special Summoned (from your Extra Deck) during a Duel you Special Summoned an "Ultimate Crystal" monster, by banishing the above monsters from your field and/or GY. While 7 or more of your "Crystal Beast" monsters with different names are banished, this card gains 7000 ATK. If this card has not battled this turn (Quick Effect): You can Tribute this card; shuffle as many cards on the field as possible into the Deck, and if you do, Special Summon any number of your banished "Crystal Beast" monsters.




FIREKnightmare Phoenix
ATK:
1900
LINK-2
Link Arrow:
Top
Right
2 monsters with different names If this card is Link Summoned: You can discard 1 card, then target 1 Spell/Trap your opponent controls; destroy it, then, if this card was co-linked when this effect was activated, you can draw 1 card. You can only use this effect of "Knightmare Phoenix" once per turn. Co-linked monsters you control cannot be destroyed by battle.




DARKKnightmare Unicorn
ATK:
2200
LINK-3
Link Arrow:
Left
Right
Bottom
2+ monsters with different names If this card is Link Summoned: You can discard 1 card, then target 1 card on the field; shuffle it into the Deck, then, if this card was co-linked when this effect was activated, you can draw 1 card. You can only use this effect of "Knightmare Unicorn" once per turn. While any co-linked "Knightmare" monsters are on the field, for your normal draw in your Draw Phase, draw 1 card for each different card name among those co-linked "Knightmare" monsters, instead of drawing just 1 card.




LIGHTUnderworld Goddess of the Closed World
ATK:
3000
LINK-5
Link Arrow:
Top
Top-Right
Right
Bottom
Bottom-Right
4+ Effect Monsters You can also use 1 monster your opponent controls as material to Link Summon this card. If this card is Link Summoned: You can negate the effects of all face-up monsters your opponent currently controls. This Link Summoned card is unaffected by your opponent's activated effects, unless they target this card. Once per turn, when your opponent activates a card or effect that Special Summons a monster(s) from the GY (Quick Effect): You can negate the activation.




FIRE
5Shiranui Swordsaga
ATK:
1900
DEF:
0
1 Tuner + 1+ non-Tuner monsters You can only Special Summon "Shiranui Swordsaga(s)" once per turn. If this card is Special Summoned: You can target 1 monster on the field; change its battle position. If this card is banished: You can Special Summon 1 "Shiranui Token" (Zombie/FIRE/Level 1/ATK 0/DEF 0). You can only use this effect of "Shiranui Swordsaga" once per turn.




LIGHT
Galaxy Photon Dragon
ATK:
2000
DEF:
0
2 Level 4 monsters Other LIGHT monsters you control gain 500 ATK. You can only use each of the following effects of "Galaxy Photon Dragon" once per turn. You can detach 1 material from this card; either add 1 "Photon" or "Galaxy" card from your Deck to your hand, or send it to the GY. If a LIGHT monster(s) is Special Summoned to your field (except during the Damage Step): You can target 1 of those monsters; its Level becomes 4 or 8 until the end of this turn.




LIGHT
Number C9: Chaos Dyson Sphere
ATK:
3600
DEF:
3200
3 Level 10 monsters At the start of the Damage Step, if this card battles an opponent's monster: You can attach that monster to this card as a face-up Xyz Material. Once per turn: You can inflict 300 damage to your opponent for each Xyz Material attached to this card. If this card has "Number 9: Dyson Sphere" as an Xyz Material, it gains this effect. ● Once per turn: You can detach any number of Xyz Materials from this card; inflict 800 damage to your opponent for each.













