Ocean Dragon Lord - Kairyu-Shin

Sea Serpent/Effect

While "Umi" is on the field, each player can only control 1 face-up non-WATER monster. (If a player controls 2 or more, they must send some to the GY so they only control 1.) During your Main Phase: You can add from your Deck to your hand 1 "Umi", 1 "Kairyu-Shin" Spell/Trap, or 1 "Sea Stealth" Spell/Trap. You can only use this effect of "Ocean Dragon Lord - Kairyu-Shin" once per turn.

Rage of Kairyu-Shin

If "Umi" is on the field: Target monsters your opponent controls, up to the number of WATER monsters you control whose original Levels are 5 or higher; destroy them, and if you do, the zones they were in cannot be used until the end of the next turn. You can only activate 1 "Rage of Kairyu-Shin" per turn.

Kairyu-Shin's Dark Reef

Send 1 face-up "Umi" you control to the GY; Special Summon up to 2 monsters with different names from your hand and/or Deck, that mention "Umi" or are WATER Normal Monsters, in Defense Position, then if your opponent controls a monster, you can Special Summon any number of Level 6 or lower WATER Normal Monsters from your hand and/or Deck. Until the end of your next turn after this card resolves, you cannot Special Summon monsters, except WATER monsters. You can only activate 1 "Kairyu-Shin's Dark Reef" per turn.

Sea Stealth II

This card's name becomes "Umi" while on the field or in the GY. Your opponent cannot target WATER monsters you control with non-WATER monster effects. At the start of the Battle Phase: You can Special Summon from your hand or GY, 1 monster that mentions "Umi", or 1 WATER Normal Monster, in Defense Position, but destroy it at the end of the Battle Phase. You can only use this effect of "Sea Stealth II" once per turn.

Sea Stealth Attack

When this card is activated: You can activate 1 "Umi" from your hand or GY. While "Umi" is on the field, this face-up card gains these effects.
• Once per turn: You can banish 1 WATER monster you control until the End Phase; this turn, face-up Spells/Traps you control cannot be destroyed by your opponent's card effects (even if this card leaves the field).
• At the start of the Damage Step, if your WATER monster whose original Level is 5 or higher battles an opponent's monster: Destroy that opponent's monster.

Abyss Shark

Fish/Effect

If this card is used for the Xyz Summon of a "Number" monster, it can be treated as a Level 3 or 4 monster. If all monsters you control are WATER (min. 1): You can Special Summon this card from your hand, and if you do, add 1 Level 3, 4, or 5 Fish monster from your Deck to your hand, except "Abyss Shark". For the rest of this turn, you cannot Special Summon monsters, except WATER monsters, also, double the first battle damage inflicted to your opponent this turn by your "Number" monster battling another monster. You can only use this effect of "Abyss Shark" once per turn.

Buzzsaw Shark

Fish/Effect

You can target 1 WATER monster you control; Special Summon from your Deck in Defense Position, 1 Fish monster with the same Level as that monster, but with a different name, and if you do, it cannot activate its effects this turn, also, you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Xyz Monsters. You can only use this effect of "Buzzsaw Shark" once per turn. If this card is used for the Xyz Summon of a WATER monster, it can be treated as a Level 3 or 5 monster.

Electric Jellyfish

Aqua/Effect

You can send 1 "Umi" from your hand, Deck, or face-up field to the GY; Special Summon 1 WATER monster from your hand. When your opponent activates a monster effect, or Spell Card or effect, while "Umi" is on the field (Quick Effect): You can negate that effect, then, you can make this card gain 600 ATK/DEF. You can only use each effect of "Electric Jellyfish" once per turn.

Crystal Shark

Fish/Effect

If this card is used for the Xyz Summon of a "Number" monster, it can be treated as a Level 3 or 4 monster. If this card is in your hand or GY: You can target 1 WATER monster on the field; Special Summon this card (but banish this card when it leaves the field), and if you do, halve that monster's ATK, also, you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Xyz Monsters. You can only use this effect of "Crystal Shark" once per turn.

Ice Barrier

When an attack is declared involving your opponent's monster: Change that opponent's monster's ATK to 0, negate its effects, also it cannot change its battle position. You can banish this card from your GY; send 1 Level 5 or higher WATER monster from your Deck to the GY, then, you can add 1 WATER monster from your GY to your hand, also, until the end of your next turn after this effect resolves, you cannot Special Summon monsters, except WATER monsters. You can only use this effect of "Ice Barrier" once per turn.

Gozen Match

Each player can only control 1 Attribute of monster. Send all other face-up monsters they control to the Graveyard.

Fish Sonar

Add 1 Level 7 or lower monster from your Deck to your hand, that mentions "Umi", or is a WATER Normal Monster, then if "Umi" is on the field, you can Special Summon 1 WATER Normal Monster from your Deck. You can only activate 1 "Fish Sonar" per turn.

Moray of Greed

Shuffle 2 WATER monsters from your hand into the Deck, then draw 3 cards.

Foolish Burial Goods

Send 1 Spell/Trap from your Deck to the GY. You can only activate 1 "Foolish Burial Goods" per turn.

Dark Ruler No More

Negate the effects of all face-up monsters your opponent currently controls, until the end of this turn, also, for the rest of this turn after this card resolves, your opponent takes no damage. Neither player can activate monster effects in response to this card's activation.

A Legendary Ocean

This card's name is treated as "Umi". Reduce the Level of all WATER monsters in both players' hands and on the field by 1. All WATER monsters gain 200 ATK and DEF.

Tribe-Infecting Virus

Aqua/Effect

Effect: Discard 1 card from your hand and declare 1 Type of monster. Destroy all face-up monsters of the declared Type on the field.

Abyss Keeper

Fish/Link/Effect

2 WATER monsters
Cannot be used as Link Material the turn it is Link Summoned. If this card is Link Summoned: You can Special Summon 1 Fish monster from your hand to your zone this card points to. You can target 1 other Fish monster you control and 1 card your opponent controls; banish those cards. You can only use each effect of "Abyss Keeper" once per turn.

Abyss Dweller

Sea Serpent/Xyz/Effect

2 Level 4 monsters
While this card has an Xyz Material attached that was originally WATER, all WATER monsters you control gain 500 ATK. Once per turn, during either player's turn: You can detach 1 Xyz Material from this card; any card effects that activate in your opponent's Graveyard cannot be activated this turn.

Toadally Awesome

Aqua/Xyz/Effect

2 Level 2 Aqua-Type monsters
Once per turn, during the Standby Phase: You can detach 1 Xyz Material from this card; Special Summon 1 "Frog" monster from your Deck. Once per turn, during either player's turn, when your opponent activates a Spell/Trap Card, or monster effect: You can send 1 Aqua-Type monster from your hand or face-up from your field to the Graveyard; negate the activation, and if you do, destroy that card, then you can Set it to your field. If this card is sent to the Graveyard: You can target 1 WATER monster in your Graveyard; add it to your hand.

Bahamut Shark

Sea Serpent/Xyz/Effect

2 Level 4 WATER monsters
Once per turn: You can detach 1 Xyz Material from this card; Special Summon 1 Rank 3 or lower WATER Xyz Monster from your Extra Deck. This card cannot attack for the rest of this turn.

N.As.H. Knight

Aqua/Xyz/Effect

2 Level 5 monsters
Cannot be destroyed by battle while a "Number" monster is on the field. During the Main Phase (Quick Effect): You can detach 2 materials from this card; attach 1 "Number" Xyz Monster from your Extra Deck to this card as material that has a number between "101" and "107" in its name, then you can attach 1 other face-up monster on the field to this card as material. You can only use this effect of "N.As.H. Knight" once per turn.

CXyz N.As.Ch. Knight

Aqua/Xyz/Effect

3 Level 6 monsters
You can also Xyz Summon this card by using "N.As.H. Knight" you control. (Transfer its materials to this card.) Cannot be destroyed by card effects. You can detach 1 material from this card; Special Summon from your Extra Deck, 1 "Number" Xyz Monster that has a number between "101" and "107" in its name, using this face-up card you control as material, but destroy it during your opponent's next End Phase. (This is treated as an Xyz Summon. Transfer its materials to the Summoned monster.) You can only use this effect of "CXyz N.As.Ch. Knight" once per turn.

Number C101: Silent Honor DARK

Aqua/Xyz/Effect

3 Level 5 monsters
Once per turn: You can target 1 Special Summoned monster your opponent controls; attach it to this card as a face-up Xyz Material. When this card is destroyed and sent to the Graveyard while it has Xyz Material: You can Special Summon this card from your Graveyard, then gain Life Points equal to the original ATK of this card. "Number 101: Silent Honor ARK" must be in your Graveyard to activate and to resolve this effect. If this card is Special Summoned this way, it cannot attack for the rest of this turn.

Number 101: Silent Honor ARK

Aqua/Xyz/Effect

2 Level 4 monsters
You can detach 2 Xyz Materials from this card, then target 1 Special Summoned monster your opponent controls in face-up Attack Position; attach it to this card as a face-up Xyz Material. You can only use this effect of "Number 101: Silent Honor ARK" once per turn. If this face-up card would be destroyed, you can detach 1 Xyz Material from this card instead.

Number 47: Nightmare Shark

Sea Serpent/Xyz/Effect

2 Level 3 monsters
When this card is Special Summoned: You can attach 1 Level 3 WATER monster from your hand or your side of the field to this card as an Xyz Material. Once per turn: You can detach 1 Xyz Material from this card, then target 1 WATER monster you control; this turn, that monster can attack your opponent directly, also other monsters cannot attack.

Number 4: Stealth Kragen

Aqua/Xyz/Effect

2 Level 4 WATER monsters
All face-up monsters on the field become WATER. Once per turn, during the Main Phase (Quick Effect): You can destroy 1 WATER monster your opponent controls, and if you do, inflict damage to your opponent equal to half the ATK it had on the field. If this Xyz Summoned card is destroyed: You can Special Summon "Stealth Kragen Spawn(s)" from your Extra Deck, up to the number of materials this card had, then you can attach up to 1 WATER monster from your GY to each of those Special Summoned monsters as material.

Leviair the Sea Dragon

Aqua/Xyz/Effect

2 Level 3 monsters // Once per turn: You can detach 1 Xyz Material from this card to target 1 banished Level 4 or lower monster, Special Summon that target to your side of the field.

Number 71: Rebarian Shark

Dragon/Xyz/Effect

2 Level 3 monsters
Once per turn: You can target 1 "Number" Xyz Monster in your GY, except "Number 71: Rebarian Shark"; Special Summon it, and if you do, attach 1 material from this card to it. If this card is sent to the GY: You can choose 1 "Rank-Up-Magic" Spell from your Deck and place it on top of your Deck.