Cosmosaur

Cosmosaur Photoraptor
Level 4 Scale 8 LIGHT Dinosaur Pendulum Effect Monster
ATK/1800
DEF/400
You cannot Pendulum Summon monsters, except "Cosmosaur" monsters. This effect cannot be negated. Once per turn, if you have no cards in your other Pendulum Zone: You can place 1 "Cosmosaur" monster from your face-up Extra Deck into your Pendulum Zone.
If this card is Summoned: You can add 1 "Cosmosaur" monster from your Deck to your hand. You can only use this effect of "Cosmosaur Photoraptor" once per turn.

Cosmosaur Diplosaxion
Level 6 Scale 8 LIGHT Dinosaur Pendulum Effect Monster
ATK/1600
DEF/2500
You cannot Pendulum Summon monsters, except "Cosmosaur" monsters. This effect cannot be negated. The first time a "Cosmosaur" Spell/Trap you control would be destroyed, it is not.
If this card in the Monster Zone is destroyed by battle or card effect: You can add 1 "Cosmosaur" Spell/Trap from your Deck to your hand. You can only use this effect of "Cosmosaur Diplosaxion" once per turn.

Cosmosaur Bradylomoch
Level 2 Scale 8 LIGHT Dinosaur Pendulum Effect Monster
ATK/900
DEF/0
You cannot Pendulum Summon monsters, except "Cosmosaur" monsters. This effect cannot be negated.

Cosmosaur Tachyoptera
Level 7 Scale 1 LIGHT Dinosaur Synchro Pendulum Effect Monster
ATK/2500
DEF/2000
Once per turn: You can target 1 "Cosmosaur" monster you control; it is treated as a Tuner for the rest of this turn. If your "Cosmosaur" attacks, your opponent cannot activate cards or effects until the end of the Damage Step.
1 Tuner Pendulum Monster + 1+ non-Tuner Pendulum Monsters
Once per Battle Phase, at the start of your Battle Phase: You can negate the effects of all face-up monsters your opponent controls until the end of the Battle Phase. If another card or effect is activated during the Battle Phase: You can negate the activation, and if you do, this can can make a second attack during this Battle Phase. You can only use this effect of "Cosmosaur Tachyoptera" once per turn. If this card in the Monster Zone is destroyed: You can place it in your Pendulum Zone.

Cosmosaur Bosonodon
Level 4 Scale 2 LIGHT Dinosaur Pendulum Effect Monster
ATK/1000
DEF/2100
You cannot Pendulum Summon monsters, except "Cosmosaur" monsters. This effect cannot be negated. If a "Cosmosaur" monster(s) you control would be destroyed by battle or card effect, you can destroy this card instead.
When a card or effect is activated that targets this face-down card (and no other cards) (Quick Effect): Change this card to face-up Defense Position, and if you do, negate the activation. If this card in your possession is destroyed: You can target 1 Spell/Trap your opponent controls; return it to the hand. You can only use this effect of "Cosmosaur Bosonodon" once per turn.

Cosmosaur Quarkcheirus
Level 9 Scale 4 LIGHT Dinosaur Ritual Pendulum Effect Monster
ATK/2900
DEF/2700
If a card or effect is activated that targets a "Cosmosaur" monster you control (and no other cards): You can negate the activation, and if you do, destroy this card.
You can Ritual Summon this card with "Cosmic Ritual". Must first be Ritual Summoned. When this card is Ritual Summoned: You can target up to 2 cards your opponent controls; destroy them. You can only use this effect of "Cosmosaur Quarkcheirus" once per turn.

Cosmosaur Neutrinorex
Level 10 Scale 0 LIGHT Dinosaur Pendulum Effect Monster
ATK/3300
DEF/3000
You can destroy this card, and if you do, place 1 "Cosmosaur" Pendulum Monster from your Deck or GY in your Pendulum Zone. You can only use this effect of "Cosmosaur Meutrinorex" once per turn.
Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand or face-up Extra Deck) by Tributing all monsters you control (min 2), including a "Cosmosaur" monster that was either Ritual Summoned or began the Duel in the Extra Deck. Once per turn: You can Tribute 1 "Cosmosaur" monster; Special Summon 1 "Cosmosaur" monster from your Deck or GY in Defense Position. Once per turn, when your opponent activates a card or effect that targets a card you control: You can negate the activation, and if you do, this card gains 200 ATK. You can only control 1 "Cosmosaur Neutrinorex".

Cosmosaur Nucleotops
Level 8 Scale 10 LIGHT Dinosaur Fusion Pendulum Effect Monster
ATK/2800
DEF/2400
Once per turn: You can Fusion Summon 1 Fusion Monster from your Extra Deck, using Pendulum Monsters from your hand and field as Fusion Materials. If your "Cosmosaur" monster attacks, it gains 500 ATK until the end of the Battle Phase.
"Cosmosaur Gluontops" + 1+ Pendulum Monsters
When this card is Fusion Summoned: You can excavate cards from your Deck, equal to the total Scales of the materials used for its Fusion Summon; shuffle them back in, then this card gains 500 ATK for each monster excavated until the end of the turn. If this card attacks a Defense Position monster, inflict piercing battle damage. If this card in the Monster Zone is destroyed: You can place it in your Pendulum Zone.

Cosmosaur Leptonyx
Level 3 Scale 8 LIGHT Dinosaur Pendulum Effect Monster
ATK/1600
DEF/0
You cannot Special Summon monsters, except "Cosmosaur" monsters. This effect cannot be negated. If you have a "Cosmosaur" monster in your other Pendulum Zone: You can destroy this card, and if you do, draw 1 card. You can only use this effect of "Cosmosaur Leptonyx" once per turn.
If this card is Special Summoned: You can target 1 "Cosmosaur" monster you control; it is treated as a Tuner until the end of this turn. You can only use this effect of "Cosmosaur Leptonyx" once per turn.

Cosmosaur Gravitaurus
Rank 4 Scale 4 LIGHT Dinosaur Xyz Pendulum Effect Monster
ATK/2500
DEF/2000
Once per turn, if you have no cards in your other Pendulum Zone: You can place 1 "Cosmosaur" monster from your Deck in your Pendulum Zone. Your opponent cannot target "Cosmosaur" monsters you control for attacks, except the 1 with the highest ATK (if it's a tie, they get to choose).
2 Level 4 Pendulum Monsters
If you can Pendulum Summon Level 4, you can Pendulum Summon this face-up card in your Extra Deck. When any player's monster declares an attack: You can detach 1 material from this card, negate the attack, and if you do, 1 "Cosmosaur" monster you control gains ATK equal to the attacking monster's ATK until the End Phase, but it cannot attack directly this turn. You can only use this effect of "Cosmosaur Gravitaurus" once per turn. If this card in the Monster Zone is destroyed: You can place it in your Pendulum Zone.

Cosmosaur Fermiocoatlus
Level 4 Scale 1 LIGHT Dinosaur Pendulum Effect Monster
ATK/1500
DEF/300
You cannot Special Summon monsters, except "Cosmosaur" monsters. This effect cannot be negated. If you have a "Cosmosaur" Pendulum Monster in your other Pendulum Zone: You can destroy both cards in your Pendulum Zone, and if you do, add 1 "Cosmic Ritual" from your Deck to your hand. You can only use this effect of "Cosmosaur Fermiocoatlus" once per turn.
You can Tribute this card from your hand or face-up from your side of the field; Tribute monsters from your hand or field, then Ritual Summon 1 "Cosmosaur" Ritual Monster from your hand whose Level exactly equals the total Levels of those monsters. You can only use this effect of "Cosmosarur Fermiocoatlus" once per turn.

Cosmosaur Luxospondalyus
Level 2 Scale 1 LIGHT Dinosaur Pendulum Tuner Effect Monster
ATK/0
DEF/1850
You cannot Special Summon monsters, except "Cosmosaur" monsters. Once per turn: You can add 1 "Cosmosaur" monster from your GY or face-up Extra Deck to your hand.
If you have a "Cosmosaur" Pendulum Monster in both of your Pendulum Zones: You can banish both of them; Special Summon 2 "Cosmosaur" monsters from your Deck in Defense Position, but you cannot activate cards, or effect of those cards with the same name this turn. You can only use this effect of "Cosmoaur Luxospondalyus" once per turn.

Cosmosaur Gluontops
Level 3 Scale 1 LIGHT Dinosaur Pendulum Flip Effect Monster
ATK/1200
DEF/1900
You cannot Special Summon monsters, except "Cosmosaur" monsters. This effect cannot be negated. Once while face-up on the field, during the End Phase: You can target 1 "Cosmosaur" Spell/Trap, "Cosmic Fusion" or "Cosmic Ritual" in your GY; add it to your hand.
FLIP: Add 1 "Cosmic Fusion" from your Deck to your hand.
If this card in your possession is destroyed: You can add 1 Level 4 or lower "Cosmosaur" monster from your Deck to your hand. You can only use 1 "Cosmosaur Gluontops" effect per turn, and only once that turn.

Lost World of the Cosmosaurs
Field Spell Card
LIGHT monsters gain 200 ATK/DEF, also DARK monsters lose 200 ATK/DEF. When this card is activated: Add 1 "Cosmosaur" monster from your Deck to your hand. If you Special Summon a "Cosmosaur" monster, you can activate these effects depending on the monster Summoned, once per turn per effect:
●Ritual: Add 1 "Cosmic Fusion" from your Deck to your hand.
●Fusion: Special Summon 1 Tuner Pendulum Monster from your hand or face-up Extra Deck.
●Synchro: Choose 1 monster from your Deck and place it on top of your Deck.
●Xyz: Draw 1 card, then shuffle 1 card from your hand into the Deck.
●Link: Add 1 "Cosmic Ritual" from your Deck to your hand.

Cosmic Fusion
Normal Spell Card
Fusion Summon 1 LIGHT or DARK Fusion Monster from your Extra Deck, using monsters from your hand and field as material. If Fusion Summoning a Pendulum Monster, you can also use face-up Pendulum Monsters in your Extra Deck. You can only activate 1 "Cosmic Fusion" per turn.

Cosmic Ritual
Ritual Spell Card
This card can be used to Ritual Summon any LIGHT or DARK Ritual Monster. Tribute monsters from your hand or field, and/or banish Pendulum Monsters from your GY, then Ritual Summon 1 LIGHT or DARK Ritual Monster from your hand whose Level exactly equals the total Levels of those monsters. If you control no monsters: You can banish this card and 1 Pendulum Monster from your GY; add 1 "Cosmic Ritual" from your Deck to your hand. You can only use 1 "Cosmic Ritual" effect per turn, and only once that turn.