2 Flip monsters Gains ATK equal to the combined original Levels of the "Subterror" monsters used for its Link Summon x 100. During your Main Phase: You can send 1 Flip monster from your Deck to the GY, and if you do, Special Summon 1 monster from your hand in face-down Defense Position to your zone this card points to. You can only use this effect of "Subterror Behemoth Fiendess" once per turn. Once per turn, if a monster this card points to is flipped face-up: Add 1 Flip monster from your Deck or GY to your hand.

2+ Level 9 monsters You can only control 1 "Jormungandr, Generaider Boss of Eternity". This card's original ATK/DEF become 1000 x its number of materials. (Quick Effect): You can detach 1 material from this card; each player draws 1 card, then each player that drew attaches 1 card from their hand or field to this card. You can only use this effect of "Jormungandr, Generaider Boss of Eternity" once per turn.

You can only control 1 "Mardel, Generaider Boss of Light". If this card is Normal or Special Summoned: You can add 1 "Generaider" card or 1 Plant monster from your Deck to your hand, except "Mardel, Generaider Boss of Light". You can only use this effect of "Mardel, Generaider Boss of Light" once per turn.

FLIP: You can add 1 "Subterror" card from your Deck to your hand, except "Subterror Guru". You can target 1 other face-up monster on the field; change that monster, also this card, to face-down Defense Position. This is a Quick Effect if you control another "Subterror" card. You can only use each effect of "Subterror Guru" once per turn.

You can only control 1 "Hela, Generaider Boss of Doom". (Quick Effect): You can Tribute 1 "Generaider" monster or 1 Zombie monster, then target 1 "Generaider" monster or 1 Zombie monster in your GY, with a different name than the Tributed monster had on the field; Special Summon that monster in Defense Position. You can only use this effect of "Hela, Generaider Boss of Doom" once per turn.

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.

You can only control 1 "Harr, Generaider Boss of Storms". Once per turn, if your opponent adds a card(s) from the Deck to their hand, except during the Draw Phase (Quick Effect): You can make your opponent send 1 monster from their hand or field to the GY (their choice). When a card or effect is activated (Quick Effect): You can Tribute 2 "Generaider" and/or Spellcaster monsters; negate the activation, and if you do, destroy that card. You can only use this effect of "Harr, Generaider Boss of Storms" once per turn.

You can only control 1 "Loptr, Shadow of the Generaider Bosses". All "Generaider" monsters you control gain 1000 ATK/DEF during your opponent's turn only. During the Main Phase (Quick Effect): You can Tribute 1 "Generaider" monster; Special Summon 1 Level 9 "Generaider" monster with a different name from your Deck. You can only use this effect of "Loptr, Shadow of the Generaider Bosses" once per turn.

FLIP: You can discard 1 "Subterror" monster, and if you do, draw 2 cards. You can only use this effect of "Subterror Behemoth Stalagmo" 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.

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.

When this card is activated: You can add 1 "Subterror" monster from your Deck to your hand. Once per turn: You can change 1 face-down Defense Position "Subterror" monster you control to face-up Attack or Defense Position. Once per turn, when an opponent's monster declares an attack: You can change 1 face-down Defense Position "Subterror" monster you control to face-up Attack or Defense Position, then you can negate the attack. You can only activate 1 "The Hidden City" per turn.

Activate 1 "Generaider" Field Spell directly from your Deck or GY, then your opponent draws 1 card. You can only activate 1 "Generaider Boss Fight" per turn.

If a face-up FIRE monster(s) you control is destroyed by battle or an opponent's card effect: You can Special Summon this card from your hand, then, you can inflict damage to your opponent equal to half the ATK of 1 of those destroyed FIRE monsters in your GY. You can only use this effect of "Cataclysmic Scorching Sunburner" once per turn.

You can only control 1 "Utgarda, Generaider Boss of Delusion". (Quick Effect): You can Tribute 2 "Generaider" monsters and/or Rock monsters, then target 1 card on the field; banish it. You can only use this effect of "Utgarda, Generaider Boss of Delusion" once per turn.

You can only control 1 "Dovelgus, Generaider Boss of Iron". (Quick Effect): You can Tribute any number of "Generaider" monsters and/or Machine monsters; Special Summon, from your hand, in Defense Position, exactly that many "Generaider" monsters and/or Machine monsters, all with different names from each other and from the Tributed monsters. You can only use this effect of "Dovelgus, Generaider Boss of Iron" once per turn.

If a face-up EARTH monster(s) you control is destroyed by battle or an opponent's card effect: You can Special Summon this card from your hand, then, you can send 1 monster from your Deck to the GY. You can only use this effect of "Cataclysmic Crusted Calcifida" once per turn.

If a face-up WIND monster(s) you control is destroyed by battle or an opponent's card effect: You can Special Summon this card from your hand, then, you can place 1 Spell/Trap from the field on top of the Deck. You can only use this effect of "Cataclysmic Cryonic Coldo" once per turn.

You can only control 1 "Frodi, Generaider Boss of Swords". (Quick Effect): You can Tribute any number of "Generaider" monsters and/or Warrior monsters, then target that many monsters on the field; destroy them, then your opponent can draw cards equal to the number of monsters destroyed on their field. You can only use this effect of "Frodi, Generaider Boss of Swords" once per turn.

If a face-up WATER monster(s) you control is destroyed by battle or an opponent's card effect: You can Special Summon this card from your hand, then you can send 1 random card from your opponent's hand to the GY. You can only use this effect of "Cataclysmic Circumpolar Chilblainia" once per turn.

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.

FLIP: You can target 1 monster on the field; change it to face-up Attack Position if it is in Defense Position, also change its ATK to 0. You can only use this effect of "Subterror Behemoth Speleogeist" 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.

Once per turn, if a card(s) is added from the Main Deck to your opponent's hand (except during the Damage Step): You can Special Summon 1 "Generaider" monster from your Deck in Defense Position. If you Special Summon a "Generaider" monster(s) during your opponent's turn (except during the Damage Step): You can Special Summon as many "Generaider Tokens" (Fairy/LIGHT/Level 4/ATK 1500/DEF 1500) as possible in Attack Position, but destroy them during the End Phase (even if this card leaves the field). You can only use this effect of "Generaider Boss Stage" once per turn.

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.

Activate 1 of these effects, also, after that, Set this card face-down instead of sending it to the GY. ●Send 1 monster from your hand or face-up field to the GY, and if you do, add 1 Flip monster from your Deck to your hand with the same Attribute, but a different name, as that monster before it was sent to the GY. ●Send 1 Flip monster from your hand or face-up field to the GY, and if you do, add 1 monster from your Deck to your hand with the same Attribute but a lower original Level, as that monster before it was sent to the GY. You can only activate 1 "Subterror Succession" per turn.