Fiend / Tuner / Effect

When this card is Normal Summoned: You can target 1 "D/D" monster in your Graveyard; Special Summon it, also you cannot Special Summon monsters for the rest of this turn, except Fiend-Type monsters. That monster's ATK and DEF become 0. If it is destroyed, you take 1000 damage.

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.

Fiend / Effect

When this card is destroyed by battle and sent to the Graveyard, or when this card in your possession is destroyed by an opponent's card effect and sent to your Graveyard, and you control no cards: You can draw 2 cards.

Fiend / Pendulum / Effect

Pendulum Effect: Once per turn: You can pay 500 LP, then target 1 face-up monster your opponent controls; it loses 500 ATK (even if this card leaves the field). Unless you have a "D/D" card in your other Pendulum Zone, this card's Pendulum Scale becomes 5.

Monster Effect: When this card is Normal Summoned: You can add 1 face-up DARK Pendulum Monster from your Extra Deck to your hand.

Fiend / Pendulum / Effect

Pendulum Effect: Once per turn: You can pay 500 LP, then target 1 "D/D" monster you control; it gains 500 ATK (even if this card leaves the field). Unless you have a "D/D" card in your other Pendulum Zone, this card's Pendulum Scale becomes 5.

Monster Effect: When this card is Normal Summoned: You can Special Summon 1 face-up DARK Pendulum Monster from your Extra Deck, but it has its effects negated, also you cannot Special Summon monsters for the rest of this turn, except "D/D" monsters.

If your opponent controls more monsters than you do: Target any number of "D/D" monsters and/or "Dark Contract" cards in your Graveyard up to the difference; add those cards to your hand. You can only activate 1 "D/D Recruits" per turn.

"Dark Contract" cards you control cannot be destroyed by your opponent's card effects. You can banish this card from your Graveyard, then target up to 3 of your other banished "D/D" cards; shuffle them into the Deck.

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 GY, except "D/D Savant Copernicus". You can only use this effect of "D/D Savant Copernicus" once per turn.

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: Increase this card's Pendulum Scale by 2 (max. 10), then destroy all monsters you control with a Level less than or equal to this card's Pendulum Scale, except "D/D" monsters.

Monster Effect: During either player's turn: You can discard this card, then target 1 "D/D" or "Dark Contract" card you control; return it to the hand. You can only use this effect of "D/D Savant Galilei" once per turn.

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.

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 Trap effect that would inflict damage to you, then destroy this card.

Monster Effect: You can discard this card, then target 1 "D/D" or "Dark Contract" card in your Graveyard, except "D/D Savant Newton"; add it to your hand. You can only use this effect of "D/D Savant Newton" once per turn.

Fiend / Pendulum / Effect

Pendulum Effect: You cannot Pendulum Summon monsters, except "D/D" monsters. This effect cannot be negated. Once per turn: You can discard 1 "D/D/D" monster, then target 1 Level 6 or lower "D/D" monster you control; it gains 2000 ATK and DEF until the end of this turn (even if this card leaves the field).

Monster Effect: If this card in the Pendulum Zone is destroyed: You can target 1 "D/D/D" monster you control; return it to the hand, and if you do, place up to 2 face-up "D/D" Pendulum Monsters from your Extra Deck in your Pendulum Zones, but they cannot activate their Pendulum Effects this turn. You can only use this effect of "D/D Savant Nikola" once per turn.

Fiend / Pendulum / Effect

Pendulum Effect: During your Main Phase: You can add 1 face-up "D/D" Pendulum Monster from your Extra Deck to your hand. You can only use this effect of "D/D Savant Thomas" once per turn.

Monster Effect: You can target 1 "D/D" card in your Pendulum Zone; destroy that card, and if you do, Special Summon 1 Level 8 "D/D/D" monster from your Deck in Defense Position, but for the rest of this turn, its effects (if any) are negated, also any battle damage your opponent takes becomes halved. You can only use this effect of "D/D Savant Thomas" once per turn.

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 GY; Special Summon 1 "D/D" monster from your hand. You can only use each effect of "D/D Swirl Slime" once per turn.

Fiend / Effect

When this card is Normal Summoned: You can Tribute 1 "D/D" monster; Special Summon 1 Level 7 "D/D/D" monster from your Deck. During your Main Phase, if this card is in the GY because it was sent there this turn: You can Fusion Summon 1 Level 8 or higher "D/D/D" Fusion Monster from your Extra Deck, by banishing Fusion Materials listed on it from your GY, including this card. You can only use each effect of "D/D Vice Typhon" once per turn.

Fiend / Link / Effect

2 "D/D" monsters

If this card is Special Summoned: You can activate this effect; you cannot Special Summon monsters for the rest of this turn, except "D/D" monsters, also place 2 "D/D" Pendulum Monsters with different names from your Deck in your Pendulum Zones, and if you do, take 1000 damage. If this Link Summoned card is destroyed by battle with an opponent's attacking monster, or by an opponent's card effect while in its owner's Monster Zone: You can Special Summon 1 "D/D" monster from your Extra Deck or GY in Defense Position. You can only use each effect of "D/D/D Abyss King Gilgamesh" once per turn.

Fiend / Pendulum / Effect

Pendulum Effect: You can banish 2 "D/D" monsters from your Graveyard; Special Summon this card from your Pendulum Zone.

Monster Effect: During your opponent's turn, if this card is in your hand or Graveyard: You can target 2 face-up Spell/Trap Cards you control; you cannot Special Summon monsters for the rest of this turn, except Fiend-Type monsters, also destroy the targeted cards, and if you do, Special Summon this card (this is a Quick Effect). You can only use this effect of "D/D/D Chaos King Apocalypse" once per turn.

When an opponent's monster declares an attack: Activate 1 of these effects;

● Banish 1 "D/D/D" monster from your Graveyard, and if you do, the attacking monster loses ATK equal to the banished monster's ATK.

● Add 1 Level 4 or lower "D/D" Pendulum Monster from your Deck to your hand.

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.

Fiend / Pendulum / Effect

Pendulum Effect: During your Main Phase: You can add 1 face-up "D/D/D" Pendulum Monster from your Extra Deck to your hand, except "D/D/D Destiny King Zero Laplace". You can only use this effect of "D/D/D Destiny King Zero Laplace" once per turn.

Monster Effect: You can Special Summon this card (from your hand) by Tributing 1 "D/D/D" monster. Before damage calculation, if this card battles an opponent's monster: You can activate this effect; this card's ATK becomes double that opponent's monster's original ATK until the end of the Damage Step. If this card attacks a Defense Position monster, inflict piercing battle damage. The first time this card would be destroyed by battle each turn, it is not destroyed, and you take no battle damage from that battle.

Fiend / Xyz / Pendulum / Effect

Pendulum Effect: While you have a card in your other Pendulum Zone: You can target 1 Pendulum Monster you control or in your GY; Special Summon the card in your other Pendulum Zone, and if you do, place that targeted Pendulum Monster in your Pendulum Zone. You can only use this effect of "D/D/D Deviser King Deus Machinex" once per turn.

Monster Effect: 2 Level 10 Fiend monsters

You can also Xyz Summon this card by using a "D/D/D" monster you control as material. (Transfer its materials to this card.) You can only control 1 "D/D/D Deviser King Deus Machinex" in your Monster Zone. Once per Chain, when a Monster Card your opponent controls activates its effect (Quick Effect): You can either detach 2 materials from this card, or destroy 1 "Dark Contract" card you control, and if you do, attach that opponent's card to this card as material. Once per turn, during your Standby Phase: You can place this card in your Pendulum Zone.

Fiend / Pendulum / Effect

Pendulum Effect: Once per turn: You can target 1 "D/D" monster you control; it gains 800 ATK until the end of this turn (even if this card leaves the field).

Monster Effect: Once per turn, if a monster(s) you control is destroyed by battle or card effect: You can target 1 of those monsters; this card gains ATK equal to that monster's original ATK until the end of this turn. This card cannot attack your opponent directly during the turn this effect is activated. Cannot be destroyed by Spell/Trap effects that do not target this card.

Fiend / Effect

If this card is in your hand: You can Tribute 1 Dragon-Type monster and 1 other Fiend-Type monster from your hand and/or your side of the field; Special Summon this card. Once per turn: You can discard 1 card; this card gains 500 ATK, then you can destroy 1 Spell/Trap Card on the field. This ATK increase lasts until the end of this turn.

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.

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 (Quick Effect): You can detach 1 material from this card; destroy all Spells and Traps on the field. You can detach 1 material from this card, then target 1 "Dark Contract" Spell/Trap in your GY; Set that target.