Subterror Deck Breakdown

WATER 2

Once per turn, you can flip this card into face-down Defense Position. When this card is flipped face-up, you can return monsters your opponent controls to their owners' hand up to the number of face-up "Frog" monsters you control, except "Frog the Jam".

WATER 2

Once per turn, you can flip this card into face-down Defense Position. When this card is flipped face-up, you can return monsters your opponent controls to their owners' hand up to the number of face-up "Frog" monsters you control, except "Frog the Jam".

EARTH 4

During either player's turn: You can send 1 "Subterror" monster from your Deck to the Graveyard; Tribute this card and at least 1 other monster so the total original Levels Tributed equal or exceed the Level of that "Subterror" monster in the Graveyard, and if you do, Special Summon that monster in face-up or face-down Defense Position. If a "Subterror Behemoth" monster is flipped face-up while this card is in your Graveyard: You can Special Summon this card. You can only use each effect of "Subterror Nemesis Warrior" once per turn.

EARTH 4

During either player's turn: You can send 1 "Subterror" monster from your Deck to the Graveyard; Tribute this card and at least 1 other monster so the total original Levels Tributed equal or exceed the Level of that "Subterror" monster in the Graveyard, and if you do, Special Summon that monster in face-up or face-down Defense Position. If a "Subterror Behemoth" monster is flipped face-up while this card is in your Graveyard: You can Special Summon this card. You can only use each effect of "Subterror Nemesis Warrior" once per turn.

EARTH 4

During either player's turn: You can send 1 "Subterror" monster from your Deck to the Graveyard; Tribute this card and at least 1 other monster so the total original Levels Tributed equal or exceed the Level of that "Subterror" monster in the Graveyard, and if you do, Special Summon that monster in face-up or face-down Defense Position. If a "Subterror Behemoth" monster is flipped face-up while this card is in your Graveyard: You can Special Summon this card. You can only use each effect of "Subterror Nemesis Warrior" once per turn.

EARTH 5

FLIP: You can target Set cards on the field, equal to the number of "Subterror Behemoth" monsters you control; destroy them. You can only use this effect of "Subterror Behemoth Stygokraken" once per turn. When a face-up monster you control is flipped face-down, if you control no face-up monsters: You can Special Summon this card from your hand in Defense Position. Once per turn: You can change this card to face-down Defense Position.

EARTH 5

FLIP: You can target Set cards on the field, equal to the number of "Subterror Behemoth" monsters you control; destroy them. You can only use this effect of "Subterror Behemoth Stygokraken" once per turn. When a face-up monster you control is flipped face-down, if you control no face-up monsters: You can Special Summon this card from your hand in Defense Position. Once per turn: You can change this card to face-down Defense Position.

EARTH 12

FLIP: You can change all other face-up monsters on the field to face-down Defense Position. You can only use this effect of "Subterror Behemoth Ultramafus" once per turn. When a face-up monster you control is flipped face-down, if you control no face-up monsters: You can Special Summon this card from your hand in Defense Position. Once per turn: You can change this card to face-down Defense Position.

EARTH 7

FLIP: You can target 1 monster your opponent controls; banish it. You can only use this effect of "Subterror Behemoth Umastryx" once per turn. When a face-up monster you control is flipped face-down, if you control no face-up monsters: You can Special Summon this card from your hand in Defense Position. Once per turn: You can change this card to face-down Defense Position.

EARTH 7

FLIP: You can target 1 monster your opponent controls; banish it. You can only use this effect of "Subterror Behemoth Umastryx" once per turn. When a face-up monster you control is flipped face-down, if you control no face-up monsters: You can Special Summon this card from your hand in Defense Position. Once per turn: You can change this card to face-down Defense Position.

EARTH 7

FLIP: You can target 1 monster your opponent controls; banish it. You can only use this effect of "Subterror Behemoth Umastryx" once per turn. When a face-up monster you control is flipped face-down, if you control no face-up monsters: You can Special Summon this card from your hand in Defense Position. Once per turn: You can change this card to face-down Defense Position.

DARK 4

Cannot be Special Summoned. If this card is Normal Summoned or flipped face-up: Target 1 face-up monster on the field; change that target to face-down Defense Position. Once per turn, during the End Phase, if this card was Normal Summoned or flipped face-up this turn: Return it to the hand.

Spell Quick

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

Spell Quick

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

Spell Quick

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

Trap Normal

Activate 1 of these effects, also, after that, Set this card face-down instead of sending it to the GY. ● Change 1 Set "Subterror" monster on the field to face-up Attack or Defense Position. ● Change 1 face-up "Subterror" monster on the field to face-down Defense Position. ● ATK/DEF of 1 "Subterror" monster on the field become equal to its combined original ATK/DEF until the end of this turn. ● This turn, activated effects of "Subterror" cards cannot be negated.

Trap Normal

Activate 1 of these effects, also, after that, Set this card face-down instead of sending it to the GY. ● Change 1 Set "Subterror" monster on the field to face-up Attack or Defense Position. ● Change 1 face-up "Subterror" monster on the field to face-down Defense Position. ● ATK/DEF of 1 "Subterror" monster on the field become equal to its combined original ATK/DEF until the end of this turn. ● This turn, activated effects of "Subterror" cards cannot be negated.

Trap Normal

Activate 1 of these effects, also, after that, Set this card face-down instead of sending it to the GY. ● Change 1 Set "Subterror" monster on the field to face-up Attack or Defense Position. ● Change 1 face-up "Subterror" monster on the field to face-down Defense Position. ● ATK/DEF of 1 "Subterror" monster on the field become equal to its combined original ATK/DEF until the end of this turn. ● This turn, activated effects of "Subterror" cards cannot be negated.

Trap Continuous

You can target 1 face-down monster you control; change it to face-up Attack or Defense Position. You can shuffle 1 "Krawler" monster from your GY into the Main Deck, then target 1 face-up monster you control; change it to face-down Defense Position. You can only use 1 "World Legacy Pawns" effect per turn, and only once that turn.

Trap Continuous

You can target 1 face-down monster you control; change it to face-up Attack or Defense Position. You can shuffle 1 "Krawler" monster from your GY into the Main Deck, then target 1 face-up monster you control; change it to face-down Defense Position. You can only use 1 "World Legacy Pawns" effect per turn, and only once that turn.

EARTH

2 Level 4 monsters Once per turn: You can detach 1 Xyz Material from this card, then target 1 Beast, Beast-Warrior, or Winged Beast-Type monster you control and 1 other card on the field; destroy them.

LIGHT

2 or more Level 5 LIGHT Insect-Type monsters You can also Xyz Summon this card by detaching 2 Xyz Materials from a Rank 3 or 4 Insect-Type Xyz Monster you control, then using that Xyz Monster as the Xyz Material. (Xyz Materials attached to that monster also become Xyz Materials on this card.) Once per turn: You can detach 1 Xyz Material from this card, then target 1 Defense Position monster your opponent controls; shuffle it into the Deck. Once per turn, if the battle position of a monster(s) on the field is changed (except during the Damage Step): You can attach 1 Insect-Type monster from your Graveyard to this card as Xyz Material.

WIND

2 Level 7 monsters You can also Xyz Summon this card by using a Rank 5 or 6 Xyz Monster you control as material. (Transfer its materials to this card.) If this card attacks a Defense Position monster, inflict piercing battle damage.

FIRE

2 Level 7 monsters If you control no other monsters, this card can attack directly, but when it does so using this effect, the battle damage inflicted to your opponent is halved. When this card inflicts battle damage to your opponent: You can detach 1 Xyz Material from this card; inflict 500 damage to your opponent for each card in their hand.

EARTH

2 or more Level 2 monsters Once per turn: You can detach 1 Xyz Material from this card, then target 1 other face-up card on the field; while this monster is face-up on the field, that target has its effects negated. While that target is on the field, cards with the same name as that target, and their effects, cannot be activated.

DARK

2 Level 4 monsters Once per turn: You can detach 1 Xyz Material from this card, then target 1 monster your opponent controls; banish it until your opponent's next Standby Phase. At the end of the Damage Step, if this card attacked: You can make this card gain 300 ATK, and if you do, increase its Rank by 3.

DARK

2 Level 7 monsters Cannot be destroyed by card effects while it has Xyz Material. While this card has Xyz Material, each time your opponent activates a card or effect, inflict 500 damage to your opponent immediately after it resolves. Once per turn, during either player's turn: You can detach 1 Xyz Material from this card, then target 1 "Red-Eyes" Normal Monster in your Graveyard; Special Summon it.