DARK 1

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.

DARK 2

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.

FIRE 8

1 Level 5 or higher "D/D" monster + 1 "D/D" monster If another "D/D" monster(s) is Normal or Special Summoned to your field while you control this monster (except during the Damage Step): You can target 1 "D/D" monster in your GY; Special Summon it. You can only use this effect of "D/D/D Flame High King Genghis" once per turn. Once per your turn, when a Spell/Trap Card, or its effect, is activated (Quick Effect): You can negate the activation.

FIRE 6

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.

DARK 10

2 "D/D/D" monsters Once per turn, when an attack is declared involving this card: You can target 1 other "D/D" or "Dark Contract" card you control; return it to the hand, and if you do, equip 1 face-up monster your opponent controls to this card, except the battling monster. This card gains ATK equal to the combined original ATK of the monsters equipped to it by this effect.

DARK 110

[ 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.

DARK 84

[ 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.

DARK 85

[ Pendulum Effect ] If you Special Summon a "D/D" monster(s), except during the Damage Step: You can target 1 "D/D" monster in your Graveyard; any battle damage your opponent takes becomes halved for the rest of this turn, also Special Summon that monster, and if you do, take 1000 damage. You can only use this effect of "D/D/D Oblivion King Abyss Ragnarok" once per turn. [ Monster Effect ] If this card is Normal or Special Summoned: You can target 1 "D/D/D" monster in your Graveyard; Special Summon it. You can only use this effect of "D/D/D Oblivion King Abyss Ragnarok" once per turn. Once per turn: You can Tribute 1 other "D/D" monster, then target 1 monster your opponent controls; banish it.

DARK 8

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.

LIGHT 2

1 Tuner + 1 non-Tuner monster When this card is Synchro Summoned: You can draw 1 card. Once per Chain, during your opponent's Main Phase, you can (Quick Effect): Immediately after this effect resolves, Synchro Summon using this card you control.

DARK 1

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.

WATER

2 Level 6 Fiend monsters When a Spell/Trap Card, or monster effect, is activated that includes an effect that Special Summons a monster (Quick Effect): You can detach 1 material from this card; negate the activation, and if you do, destroy that card, then you can make 1 other "D/D" monster you control and this card gain 1800 ATK until the end of this turn. If this card is sent from the field to the GY: You can add 1 "Dark Contract" card from your Deck to your hand.

DARK

2 Level 8 monsters You can only Special Summon "Dingirsu, the Orcust of the Evening Star(s)" once per turn. You can also Xyz Summon this card by using an "Orcust" Link Monster you control as material. If a card(s) you control would be destroyed by battle or card effect, you can detach 1 material from this card instead. If this card is Special Summoned: You can activate 1 of these effects; ● Send 1 card your opponent controls to the GY. ● Attach 1 of your banished Machine monsters to this card as material.

DARK

2 Level 8 monsters Gains 100 ATK and DEF for each monster in the GYs. Once per turn: You can detach 1 material from this card; until the end of your opponent's next turn, this card cannot be destroyed by card effects, also neither player can Special Summon monsters from the GYs.

Spell Quick

Target 1 face-up monster on the field; change that target to face-down Defense Position.

Spell Continuous

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.

Spell Continuous

During your Main Phase: You can Fusion Summon 1 Fiend-Type Fusion Monster from your Extra Deck, using monsters from your hand or 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.

Spell Quick

Activate 1 of these effects. ● Target 1 face-up monster your opponent controls; change that target's battle position. ● Tribute 1 monster, then target 1 face-up monster your opponent controls; take control of that target until the End Phase.

Trap Continuous

You can send 1 "D/D" or "Dark Contract" card from your hand to the Graveyard, then target 1 card on the field; destroy it. You can only use this effect of "Dark Contract with the Witch" once per turn. All Fiend-Type monsters you control gain 1000 ATK during your opponent's turn only. Once per turn, during your Standby Phase: Take 1000 damage.

DARK 1

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.

DARK 2

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.

FIRE 8

1 Level 5 or higher "D/D" monster + 1 "D/D" monster If another "D/D" monster(s) is Normal or Special Summoned to your field while you control this monster (except during the Damage Step): You can target 1 "D/D" monster in your GY; Special Summon it. You can only use this effect of "D/D/D Flame High King Genghis" once per turn. Once per your turn, when a Spell/Trap Card, or its effect, is activated (Quick Effect): You can negate the activation.

FIRE 6

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.

DARK 84

[ 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.

DARK 8

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.

LIGHT 2

1 Tuner + 1 non-Tuner monster When this card is Synchro Summoned: You can draw 1 card. Once per Chain, during your opponent's Main Phase, you can (Quick Effect): Immediately after this effect resolves, Synchro Summon using this card you control.

DARK 1

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.

WATER

2 Level 6 Fiend monsters When a Spell/Trap Card, or monster effect, is activated that includes an effect that Special Summons a monster (Quick Effect): You can detach 1 material from this card; negate the activation, and if you do, destroy that card, then you can make 1 other "D/D" monster you control and this card gain 1800 ATK until the end of this turn. If this card is sent from the field to the GY: You can add 1 "Dark Contract" card from your Deck to your hand.

DARK

2 Level 8 monsters You can only Special Summon "Dingirsu, the Orcust of the Evening Star(s)" once per turn. You can also Xyz Summon this card by using an "Orcust" Link Monster you control as material. If a card(s) you control would be destroyed by battle or card effect, you can detach 1 material from this card instead. If this card is Special Summoned: You can activate 1 of these effects; ● Send 1 card your opponent controls to the GY. ● Attach 1 of your banished Machine monsters to this card as material.

Spell Quick

Target 1 face-up monster on the field; change that target to face-down Defense Position.