D/D Orthros

Fiend/Pendulum/Tuner/Effect

Pendulum Effect: Once per turn: You can target 1 Spell/Trap Card on the field and 1 other "D/D" or "Dark Contract" card you control; destroy them.
Monster Effect: When you take battle or effect damage: You can Special Summon this card from your hand. If this card is Special Summoned to your field, you cannot Special Summon monsters for the rest of this turn, except Fiend-Type monsters.

D/D Savant Copernicus

Fiend/Pendulum/Effect

Pendulum Effect: You cannot Pendulum Summon monsters, except "D/D" monsters. This effect cannot be negated. Once, while this card is in your Pendulum Zone, you can negate an activated Spell effect that would inflict damage to you, then destroy this card.
Monster Effect: If this card is Normal or Special Summoned: You can send 1 "D/D" or "Dark Contract" card from your Deck to the Graveyard, except "D/D Savant Copernicus". You can only use this effect of "D/D Savant Copernicus" once per turn.

Ghost Ogre & Snow Rabbit

Psychic/Tuner/Effect

When a monster on the field activates its effect, or when a Spell/Trap that is already face-up on the field activates its effect (Quick Effect): You can send this card from your hand or field to the GY; destroy that card on the field. You can only use this effect of "Ghost Ogre & Snow Rabbit" once per turn.

D/D Swirl Slime

Fiend/Effect

If this card is in your hand: You can Fusion Summon 1 "D/D/D" Fusion Monster from your Extra Deck, using monsters from your hand as Fusion Materials, including this card. You can banish this card from your Graveyard; Special Summon 1 "D/D" monster from your hand. You can only use each effect of "D/D Swirl Slime" once per turn.

D/D Necro Slime

Fiend/Effect

If this card is in your Graveyard: You can Fusion Summon 1 "D/D/D" Fusion Monster from your Extra Deck, by banishing Fusion Materials listed on it from your Graveyard, including this card. You can only use this effect of "D/D Necro Slime" once per turn.

D/D Lamia

Fiend/Tuner/Effect

If this card is in your hand or Graveyard: You can send 1 "D/D" or "Dark Contract" card from your hand or face-up from your field to the Graveyard, except "D/D Lamia"; Special Summon this card, but banish it when it leaves the field. You can only use this effect of "D/D Lamia" once per turn.

D/D Savant Kepler

Fiend/Pendulum/Effect

Pendulum Effect: You cannot Pendulum Summon monsters, except "D/D" monsters. This effect cannot be negated. Once per turn, during your Standby Phase: Reduce this card's Pendulum Scale by 2 (min. 1), then destroy all monsters you control with a Level greater than or equal to this card's Pendulum Scale, except "D/D" monsters.
Monster Effect: If this card is Normal or Special Summoned: You can activate 1 of these effects. You can only use this effect of "D/D Savant Kepler" once per turn.
- Target 1 other "D/D" card you control; return it to the hand.
- Add 1 "Dark Contract" card from your Deck to your hand.

Allure of Darkness

Draw 2 cards, then banish 1 DARK monster from your hand, or, if you do not have any in your hand, send your entire hand to the GY.

Pot of Desires

Banish 10 cards from the top of your Deck, face-down; draw 2 cards. You can only activate 1 "Pot of Desires" per turn.

Dragon Shrine

Send 1 Dragon monster from your Deck to the GY, then, if that monster in your GY is a Dragon Normal Monster, you can send 1 more Dragon monster from your Deck to the GY. You can only activate 1 "Dragon Shrine" per turn.

Soul Charge

Target any number of monsters in your GY; Special Summon them, and if you do, you lose 1000 LP for each monster Special Summoned by this effect. You cannot conduct your Battle Phase the turn you activate this card. You can only activate 1 "Soul Charge" per turn.

Foolish Burial

Send 1 monster from your Deck to the Graveyard.

Monster Reborn

Special Summon 1 monster from either player's Graveyard to your side of the field.

Dark Contract with the Gate

During your Main Phase: You can add 1 "D/D" monster from your Deck to your hand. You can only use this effect of "Dark Contract with the Gate" once per turn. Once per turn, during your Standby Phase: Take 1000 damage.

Dark Contract with the Swamp King

During your Main Phase: You can Fusion Summon 1 Fiend-Type Fusion Monster from your Extra Deck, using monsters from your hand or your side of the field as Fusion Materials. You can only use this effect of "Dark Contract with the Swamp King" once per turn. If Summoning a "D/D" Fusion Monster this way, you can also banish monsters from your Graveyard as Fusion Material. Once per turn, during your Standby Phase: Take 1000 damage.

D/D/D Dragonbane King Beowulf

Fiend/Fusion/Effect

1 "D/D/D" monster + 1 "D/D" monster

If a "D/D" monster you control attacks a Defense Position monster, inflict piercing battle damage to your opponent. Once per turn, during your Standby Phase: You can destroy all cards in the Spell & Trap Zones.

D/D/D Oracle King d'Arc

Fiend/Fusion/ Effect

2 "D/D" monsters
Any effect that would inflict damage to you makes you gain that much LP, instead.

Odd-Eyes Vortex Dragon

Dragon/Fusion/Effect

1 "Odd-Eyes" monster + 1 Pendulum Monster
When this card is Special Summoned: You can target 1 opponent's face-up Attack Position monster; return it to the hand. When a Spell/Trap Card or another monster's effect is activated (Quick Effect): You can shuffle 1 face-up Pendulum Monster from your Extra Deck into the Deck, negate the activation, and if you do, destroy that card. You can only use each effect of "Odd-Eyes Vortex Dragon" once per turn.

D/D/D Flame King Genghis

Fiend/Fusion/Effect

2 "D/D" monsters
If another "D/D" monster(s) is Special Summoned to your field, while you control this face-up card (except during the Damage Step): You can target 1 "D/D" monster in your Graveyard; Special Summon it. You can only use this effect of "D/D/D Flame King Genghis" once per turn. If this card is destroyed by battle, or if this card in its owner's possession is destroyed by an opponent's card effect: You can target 1 "Dark Contract" card in your Graveyard; add it to your hand.

Crystal Wing Synchro Dragon

Dragon/Synchro/Effect

1 Tuner + 1+ non-Tuner Synchro Monsters
Once per turn, when another monster's effect is activated (Quick Effect): You can negate the activation, and if you do, destroy that monster, and if you do that, this card gains ATK equal to the destroyed monster's original ATK until the end of this turn. If this card battles a Level 5 or higher monster your opponent controls, during damage calculation: This card gains ATK equal to the current ATK of the opponent's monster it is battling during that damage calculation only.

D/D/D Cursed King Siegfried

Fiend/Synchro/Effect

1 Tuner + 1 or more non-Tuner "D/D" monsters
During either player's turn: You can target 1 face-up Spell/Trap Card on the field; that target has its effects negated, until the next Standby Phase. You can only use this effect of "D/D/D Cursed King Siegfried" once per turn. If this card is destroyed by battle or card effect and sent to the Graveyard: Gain 1000 LP for each "Dark Contract" card you control.

D/D/D Gust King Alexander

Fiend/Synchro/Effect

1 "D/D" Tuner + 1 or more non-Tuner monsters
If another "D/D" monster(s) is Normal or Special Summoned to your field, while you control this face-up card (except during the Damage Step): You can target 1 Level 4 or lower "D/D" monster in your Graveyard; Special Summon it. You can only use this effect of "D/D/D Gust King Alexander" once per turn.

Odd-Eyes Meteorburst Dragon

Dragon/Synchro/Effect

1 Tuner + 1+ non-Tuner monsters
When this card is Special Summoned: You can target 1 card in your Pendulum Zone; Special Summon it, also this card cannot attack for the rest of this turn. You can only use this effect of "Odd-Eyes Meteorburst Dragon" once per turn. Monsters in your opponent's possession cannot activate their effects during the Battle Phase.

D/D/D Duo-Dawn King Kali Yuga

Fiend/Xyz/Effect

2 Level 8 "D/D" monsters
After this card is Xyz Summoned, for the rest of this turn, other cards and their effects cannot be activated on the field, and other cards' effects on the field are negated. Once per turn, during either player's turn: You can detach 1 Xyz Material from this card; destroy all Spell and Trap Cards on the field. You can detach 1 Xyz Material from this card, then target 1 "Dark Contract" Spell/Trap Card in your Graveyard; Set that target.

Number 38: Hope Harbinger Dragon Titanic Galaxy

Dragon/Xyz/Effect

2 Level 8 monsters
Once per turn, during either player's turn, when a Spell Card or effect is activated on the field: You can negate that effect, and if you do, attach that card to this card as Xyz Material. When an opponent's monster declares an attack: You can detach 1 Xyz Material from this card; change the attack target to this card and perform damage calculation. If a face-up Xyz Monster(s) you control is destroyed by battle or card effect: You can target 1 face-up Xyz Monster you control; it gains ATK equal to 1 of those destroyed monster's original ATK.

Odd-Eyes Absolute Dragon

Dragon/Xyz/Effect

2 Level 7 monsters
When any player's monster declares an attack: You can detach 1 material from this card; negate the attack, then you can Special Summon 1 "Odd-Eyes" monster from your hand or GY. If this Xyz Summoned card is sent to the GY: You can Special Summon 1 "Odd-Eyes" monster from your Extra Deck, except "Odd-Eyes Absolute Dragon". You can only use each effect of "Odd-Eyes Absolute Dragon" once per turn.

Supreme King Dragon Dark Rebellion

Dragon/Xyz/Effect

2 Level 4 DARK Pendulum Monsters
Once per turn, before damage calculation, if this card battles an opponent's monster: You can detach 1 material from this card; until the end of this turn, change the ATK of that face-up opponent's monster to 0, and if you do, this card gains ATK equal to the original ATK of that opponent's monster. During the Battle Phase (Quick Effect): You can return this card to the Extra Deck; Special Summon up to 2 face-up "Supreme King Dragon" and/or "Supreme King Gate" Pendulum Monsters from your Extra Deck in Defense Position.

Zefra Metaltron

Wyrm/Link/Effect

2+ monsters that were Special Summoned from the Extra Deck
If a monster this card points to that was Special Summoned from the Extra Deck is destroyed by battle or an opponent's card effect: You can add to your hand, 1 monster from your GY or 1 face-up Pendulum Monster from your Extra Deck. You can target 1 other monster you control and 1 monster your opponent controls that were Special Summoned from the Extra Deck; banish both monsters until the End Phase. You can only use each effect of "Zefra Metaltron" once per turn.

Heavymetalfoes Electrumite

Psychic/Link/Effect

2 Pendulum Monsters
If this card is Link Summoned: You can add 1 Pendulum Monster from your Deck to your Extra Deck face-up. Once per turn: You can target 1 other face-up card you control; destroy it, then add 1 face-up Pendulum Monster from your Extra Deck to your hand. If a card(s) in your Pendulum Zone leaves the field: Draw 1 card. You can only use this effect of "Heavymetalfoes Electrumite" once per turn.

Wee Witch's Apprentice

Spellcaster/Link/Effect

2 DARK monsters
All DARK monsters on the field gain 500 ATK/DEF, also all LIGHT monsters on the field lose 400 ATK/DEF. If this card is destroyed by battle or card effect: You can target 1 DARK monster in your GY; add it to your hand. You can only use this effect of "Wee Witch's Apprentice" once per turn.

The Winged Dragon of Ra - Sphere Mode

Divine-Beast/Effect

Cannot be Special Summoned. Requires 3 Tributes from either side of the field to Normal Summon to that side of the field (cannot be Normal Set), then shift control to this card's owner during the End Phase of the next turn. Cannot attack. Your opponent cannot target this card for attacks or by card effects. You can Tribute this card; Special Summon 1 "The Winged Dragon of Ra" from your hand or Deck, ignoring its Summoning conditions, and if you do, its ATK/DEF become 4000.

Gameciel, the Sea Turtle Kaiju

Aqua/Effect

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. During either player's turn, when your opponent activates a card or effect, except "Gameciel, the Sea Turtle Kaiju": You can remove 2 Kaiju Counters from anywhere on the field; negate the activation, and if you do, banish that card.

Radian, the Multidimensional Kaiju

Fiend/Effect

You can Special Summon this card (from your hand) to your opponent's side of the 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. Once per turn: You can remove 2 Kaiju Counters from anywhere on the field; Special Summon 1 "Radian Token" (Fiend-Type/DARK/Level 7/ATK 2800/DEF 0), but it cannot be used as a Synchro Material.

Vanity's Fiend

Fiend/Effect

Cannot be Special Summoned. Neither player can Special Summon monsters.

Called by the Grave

Target 1 monster in your opponent's GY; banish it, and if you do, monsters with the same original name as that banished monster have their effects negated until the end of the next turn.

Twin Twisters

Discard 1 card, then target up to 2 Spell/Trap Cards on the field; destroy them.

Mind Crush

Declare 1 card name; if that card is in your opponent's hand, they must discard all copies of it, otherwise you discard 1 random card.

Red Reboot

When your opponent activates a Trap Card: Negate the activation, and if you do, Set that card face-down, then your opponent can Set 1 Trap directly from their Deck. For the rest of this turn after this card resolves, your opponent cannot activate Trap Cards. You can activate this card from your hand by paying half your LP.

Majesty's Fiend

Fiend/Effect

Cannot be Special Summoned. Monster effects cannot be activated.

Dark End Dragon

Dragon/Synchro/Effect

1 Tuner + 1 or more non-Tuner DARK monsters // Once per turn: You can target 1 monster your opponent controls; this card loses 500 ATK and DEF, and you send that target to the Graveyard.