2 "Paleozoic" monsters Unaffected by other monsters' effects. You can only use each of the following effects of "Paleozoic Cambroraster" once per turn. You can target 1 Set card in the Spell & Trap Zone; send it to the GY, and if you do, Set 1 "Paleozoic" Trap directly from your Deck. It can be activated this turn. If a Set card(s) you control would be destroyed by card effect, you can banish this card from your field or GY instead.

1 Rock monster + 1 Level 7 or higher monster Must first be Special Summoned with "Fossil Fusion". This card can make a second attack during each Battle Phase. If this card attacks a Defense Position monster, inflict piercing battle damage. During your opponent's turn (Quick Effect): You can target 1 monster in your opponent's GY; discard 1 card, and if you do, Special Summon that monster to your field. You can only use this effect of "Fossil Warrior Skull King" once per turn.

Cannot be Normal Summoned/Set. Must be Special Summoned with the effect of a "Triamid" card, and cannot be Special Summoned by other ways. If a face-up "Triamid" card(s) you control, except "Triamid Sphinx", is destroyed by battle or card effect: You can Special Summon this card from your hand. While you control another "Triamid" card, this card gains 500 ATK and DEF for each Field Spell Card with a different name in your Graveyard, also monsters your opponent controls cannot attack, except to attack "Triamid Sphinx".

Fusion Summon 1 "Fossil" Fusion Monster from your Extra Deck, by banishing Fusion Materials mentioned on it from any GYs (except for materials with a specific GY requirement listed). If you banished monsters from both GYs, neither player can target that Special Summoned monster with monster effects. If a face-up "Fossil" Fusion Monster(s) you control is destroyed by battle or card effect, while this card is in your GY: You can add this card from the GY to your hand. You can only use this effect of "Fossil Fusion" once per turn.

3 or more Level 2 monsters This card is unaffected by other monsters' effects. Once per turn, if a Trap Card(s) is sent from your Spell & Trap Zone to the Graveyard (except during the Damage Step): You can excavate the top card of your Deck, and if it is a Trap Card, add it to your hand. Otherwise, send it to the Graveyard. Once per turn, during either player's turn, if this card has a Trap Card as Xyz Material: You can detach 1 Xyz Material from this card, then target 1 card on the field; destroy it.

2 Level 2 monsters This card is unaffected by other monsters' effects. You can activate "Paleozoic" Trap Cards from your hand. If this card has a Trap Card as Xyz Material: You can detach 1 Xyz Material from this card; add 1 "Paleozoic" Trap Card from your Deck to your hand. You can only use this effect of "Paleozoic Opabinia" once per turn.

1 Rock monster in your GY + 1 Level 7 or higher monster Must first be Special Summoned with "Fossil Fusion". While you control this Fusion Summoned card, all monsters your opponent controls lose ATK equal to their original DEF. This card can make up to 3 attacks on monsters during each Battle Phase. When this card destroys an opponent's monster by battle: You can inflict 1000 damage to your opponent.

1 Rock monster + 1 Level 5 or 6 monster Must first be Special Summoned with "Fossil Fusion". If this card attacks a Defense Position monster, inflict piercing battle damage. When this attacking card destroys a monster by battle: You can activate this effect; this card can make a second attack in a row. You can banish this card from your GY, then target 1 monster on the field; destroy it. You can only use this effect of "Fossil Warrior Skull Knight" once per turn.

1 Rock monster + 1 Level 7 or higher monster in your opponent's GY Must first be Special Summoned with "Fossil Fusion". Before damage calculation, if this card battles an opponent's monster: You can switch the current ATK and DEF of that opponent's monster until the end of that Damage Step. If this card attacks a Defense Position monster, inflict piercing battle damage. If this Fusion Summoned card battles an opponent's monster, any battle damage it inflicts to your opponent is doubled.

You can discard 1 Rock monster; Special Summon from your Deck, 1 Rock monster that has the same original Attribute and Level as that monster, in face-up Attack Position or face-down Defense Position. You can only use this effect of "Doki Doki" once per turn.

If this card is flipped face-up: Destroy all Special Summoned monsters on the field. Neither player can Special Summon monsters.

Target 1 "Fossil" Fusion Monster you control; Tribute it, and if you do, Special Summon 1 "Fossil" Fusion Monster from your Extra Deck, whose original Level is 2 higher than that monster's. (This is treated as a Fusion Summon with "Fossil Fusion".) During your Main Phase, except the turn this card was sent to the GY: You can banish this card and 1 "Fossil" Fusion Monster from your GY, then target 1 "Fossil" Fusion Monster in your GY; Special Summon it.

1 Rock monster + 1 Level 4 or lower monster in your opponent's GY Must first be Special Summoned with "Fossil Fusion". If this card attacks a Defense Position monster, inflict piercing battle damage. You can banish this card from your GY; add 1 "Fossil Fusion" from your Deck to your hand. You can only use this effect of "Fossil Dragon Skullgar" once per turn.

1 Rock monster + 1 Level 4 or lower monster Must first be Special Summoned with "Fossil Fusion". This card can make up to 2 attacks on monsters during each Battle Phase. You can banish this card from your GY; add 1 "Time Stream" from your Deck to your hand. You can only use this effect of "Fossil Warrior Skull Bone" once per turn.

If this card is destroyed by battle or sent to the GY by a card effect: You can add 1 "Fossil Fusion", or 1 card that mentions "Fossil Fusion" except "Weathering Soldier", from your Deck to your hand. You can only use this effect of "Weathering Soldier" once per turn. Once per turn, during your End Phase: This card loses 600 ATK.

When this card is Normal Summoned: You can change this card to Defense Position, and if you do, inflict 500 damage to your opponent. If this card is sent to the GY by card effect, or destroyed by battle: You can add 1 Level 8 Rock monster from your Deck to your hand, or if "Fossil Fusion" is in your GY, you can Special Summon it instead. For the rest of this turn, you cannot activate cards, or the effects of cards, with the same name as that card. You can only use this effect of "Shell Knight" once per turn.

Cannot be Normal Summoned/Set. Must be Special Summoned by a card effect. If a monster is sent from your opponent's hand or Deck to the GY (except during the Damage Step): You can Special Summon this card from your hand in face-down Defense Position. If this card is flipped face-up: You can target up to 2 cards on the field; destroy them.

If a Field Spell is placed face-up in the Field Zone: You can add 1 "Triamid" Spell/Trap from your Deck to your hand, except "Triamid Loading". If a face-up Rock monster(s) you control is destroyed by battle or an opponent's card effect: You can Special Summon 1 "Triamid" monster with a different name from your Deck. You can only use each effect of "Triamid Loading" once per turn.

Each time a Rock-Type monster is Normal Summoned, gain 500 LP. If a "Triamid" monster is Normal Summoned: You can draw 1 card, then discard 1 card. If this face-up card in the Field Zone is sent to the Graveyard: You can add 1 "Triamid" monster from your Deck to your hand. You can only use this effect of "Triamid Cruiser" once per turn.

All Rock-Type monsters on the field gain 500 ATK. If a "Triamid" monster you control battles, your opponent's cards and effects cannot be activated until the end of the Damage Step. If this face-up card in the Field Zone is sent to the Graveyard: You can Special Summon 1 "Triamid" monster from your hand. You can only use this effect of "Triamid Kingolem" once per turn.

All Rock-Type monsters on the field gain 500 DEF. "Triamid" monsters on the field cannot be destroyed by card effects. If this face-up card in the Field Zone is sent to the Graveyard: You can target 1 "Triamid" monster in your Graveyard; add it to your hand. You can only use this effect of "Triamid Fortress" once per turn.

Target 1 face-up card on the field; discard 1 card, and if you do, banish it. Once per Chain, when a Trap Card is activated while this card is in your GY: You can Special Summon this card as a Normal Monster (Aqua/WATER/Level 2/ATK 1200/DEF 0). (This card is NOT treated as a Trap.) If Summoned this way, this card is unaffected by monster effects, also banish it when it leaves the field.

Discard 1 "Paleozoic" card, then draw 2 cards. Once per Chain, when a Trap Card is activated while this card is in your Graveyard: Special Summon this card as a Normal Monster (Aqua-Type/WATER/Level 2/ATK 1200/DEF 0). (This card is NOT treated as a Trap Card.) If Summoned this way, this card is unaffected by monster effects, also banish it when it leaves the field.