Kairyu-Shin

Sea Serpent/Normal

A sea dragon known as the King of the Ocean, it attacks its enemies with huge tidal waves.

Barrier Statue of the Torrent

Aqua/Effect

Neither player can Special Summon monsters, except WATER monsters.

Chaos Hunter

Fiend/Effect

When your opponent Special Summons a monster (except during the Damage Step): You can discard 1 card; Special Summon this card from your hand. Your opponent cannot banish cards.

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.

Gameciel, the Sea Turtle Kaiju

Aqua/Effect

You can Special Summon this card (from your hand) to your opponent's field in Attack Position, by Tributing 1 monster they control. If your opponent controls a "Kaiju" monster, you can Special Summon this card (from your hand) in Attack Position. You can only control 1 "Kaiju" monster. During either player's turn, when your opponent activates a card or effect, except "Gameciel, the Sea Turtle Kaiju": You can remove 2 Kaiju Counters from anywhere on the field; negate the activation, and if you do, banish that card.

Lord of the Heavenly Prison

Rock/Effect

During your Main Phase: You can activate this effect; this card in your hand becomes revealed until the end of your opponent's turn. While this card is revealed by this effect, Set cards on the field cannot be destroyed by card effects. If a Set Spell/Trap Card is activated (except during the Damage Step): You can Special Summon this card from your hand, then, if you activated this effect while this card was revealed, you can reveal and Set 1 Spell/Trap directly from your Deck, but banish it during the End Phase of the next turn. You can only use 1 "Lord of the Heavenly Prison" effect per turn, and only once that turn.

Mega Fortress Whale

Fish/Effect

If "Umi" is on the field: You can activate this effect; your WATER monsters can attack directly this turn. During your opponent's Battle Phase (Quick Effect): You can target 1 face-up monster your opponent controls; destroy it. If this card on the field is destroyed by battle or card effect: You can either add to your hand or Special Summon 1 WATER Warrior monster from your Deck or GY. You can only use each effect of "Mega Fortress Whale" once per turn.

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.

The Iris Swordsoul

Spellcaster/Effect

During the Main Phase, if a monster, whose effects are negated, is on the field (Quick Effect): You can Special Summon this card from your hand. If your opponent Special Summons a monster(s) (except during the Damage Step): You can activate 1 of these effects based on where it was Special Summoned from;
• Hand: Special Summon 1 monster from your hand. • Deck: Draw 2 cards. • Extra Deck: Destroy 1 of those monsters Special Summoned from the Extra Deck. You can only use each effect of "The Iris Swordsoul" once per turn.

Warrior of Atlantis

Aqua/Effect

You can discard this card to the Graveyard to add 1 "A Legendary Ocean" from your Deck to your hand.

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.

Called by the Grave

Target 1 monster in your opponent's GY; banish it, and if you do, monsters with the same original name as that banished monster have their effects negated until the end of the next 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.

Double Summon

You can conduct 2 Normal Summons/Sets this turn, not just 1.

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.

Foolish Burial Goods

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

Harpie's Feather Duster

Destroy all Spell and Trap Cards your opponent controls.

Pot of Extravagance

At the start of your Main Phase 1: Banish 3 or 6 random face-down cards from your Extra Deck, face-down; draw 1 card for every 3 cards banished. For the rest of this turn after this card resolves, you cannot draw cards by card effects.

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.

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.

Evenly Matched

At the end of the Battle Phase, if your opponent controls more cards than you do: You can make your opponent banish cards from their field face-down so they control the same number of cards as you do. If you control no cards, you can activate this card from your hand.

Grave of the Super Ancient Organism

While this card is face-up on the field, Level 6 or higher Special Summoned monsters cannot attack or activate their effect(s).

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.

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.

Solemn Judgment

When a monster would be Summoned, OR a Spell/Trap Card is activated: Pay half your Life Points; negate the Summon or activation, and if you do, destroy that card.

White Howling

If you control a WATER monster: Target 1 Spell in your opponent's GY; banish it, and if you do, for the rest of this turn negate all Spell effects on your opponent's field.