Umi Deck Breakdown

WATER 4

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.

WATER 5

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.

LIGHT 6

You can Special Summon this card (from your hand) to your opponent's field in Defense Position, by Tributing 1 monster they control. If Summoned this way, once, during the End Phase of this turn: You can draw 1 card.

WATER 4

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

WIND

2 Level 4 monsters You can detach 1 material from this card, then target 1 face-up monster on the field; change it to face-down Defense Position. You can detach 2 materials from this card, then target 1 other face-up card on the field; shuffle it into the Deck. You can only use 1 "Castel, the Skyblaster Musketeer" effect per turn, and only once that turn.

LIGHT

2 Level 4 monsters Once per chain, during your Main Phase or your opponent's Battle Phase, if your opponent has more total cards in their hand and field than you do (Quick Effect): You can detach 1 material from this card; destroy all other cards on the field, also your opponent takes no further damage this turn.

LIGHT

2 Level 4 monsters When a monster declares an attack: You can detach 1 material from this card; negate the attack. If this card is targeted for an attack, while it has no material: Destroy this card.

LIGHT

3 Level 4 LIGHT monsters You can also Xyz Summon this card by using a "Number 39: Utopia" you control as the Xyz Material. (Xyz Materials attached to that monster also become Xyz Materials on this card.) You can detach 1 Xyz Material from this card; it gains 500 ATK and 1 monster your opponent controls loses 1000 ATK, until the End Phase. You must have 1000 Life Points or less to activate and to resolve this effect.

LIGHT

3 Level 5 LIGHT monsters You can also Xyz Summon this card by using a Rank 4 "Utopia" monster you control as material. (Transfer its materials to this card.) Cannot be used as material for an Xyz Summon. If this card battles, your opponent cannot activate cards or effects until the end of the Damage Step. Once per Chain, during damage calculation, if this card battles an opponent's monster while this card has a "Utopia" Xyz Monster as material (Quick Effect): You can detach 2 materials from this card; this card's ATK becomes 5000 during that damage calculation only.

WATER

2 Level 3 monsters Cannot attack unless it has Xyz Material. Once per turn: You can detach 1 Xyz Material from this card, then target 1 Spell/Trap Card on the field; destroy it. This effect can be activated during either player's turn, if this card has "Super Quantum Blue Layer" as Xyz Material. Once per turn: You can attach 1 "Super Quantum" monster from your hand or field to this card as an Xyz Material.

WIND

2 Level 4 monsters Once per turn (Quick Effect): You can detach 1 material from this card, then target 1 Spell/Trap on the field; destroy it.

Spell Field

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

Spell Normal

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.

Spell Normal

Add 1 "Torrential Tribute" from your Deck to your hand. If a WATER monster(s) you control would be destroyed by card effect, you can banish this card from your GY instead. You can only use each effect of "Fury of Kairyu-Shin" once per turn.

Spell Normal

Pay 1500 LP and declare 1 Monster Type and 1 Attribute; your opponent must send 1 face-up monster with the declared Type and Attribute from their field to the GY, if possible. For the rest of this turn, your opponent cannot activate the effects of monsters with that sent monster's name. You can only activate 1 "Herald of the Abyss" per turn.

Spell Normal

Pay half your LP; destroy as many monsters your opponent controls as possible, then you can Special Summon 1 monster from your opponent's GY to your field, ignoring its Summoning conditions. You can only apply this effect of "Illusion Gate" once per Duel.

Spell Quick

Until the end of your next turn after this card resolves, neither player can add cards from their Deck to their hand except by drawing them.

Spell Normal

Excavate the top 3 cards of your Deck, add 1 of them to your hand, also, after that, shuffle the rest back into your Deck. You can only activate 1 "Pot of Duality" per turn. You cannot Special Summon during the turn you activate this card.

Spell Normal

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 any cards by card effects.

Spell Continuous

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.

Spell Continuous

Destroy this card during your 2nd Standby Phase after activation. When this card resolves, change all monsters your opponent controls to face-down Defense Position. Monsters your opponent controls cannot change their battle positions.

Trap Counter

When a Spell Card is activated: Discard 1 Spell; negate the activation, and if you do, destroy it, and if you do that, your opponent cannot activate Spell Cards with that name for the rest of this Duel.

Trap Counter

When your opponent activates a monster effect on the field: Negate the activation, and if you do, destroy that card, then, you can apply the following effect. ● Banish 1 monster from your hand, and if you do, Special Summon the monster that was destroyed and sent to the GY by this effect to your field, but negate its effects. You can only activate 1 "Draco-Utopian Aura" per turn.

Trap Continuous

Neither player can Tribute cards.

Trap Continuous

Neither player can Fusion Summon.

Trap Counter

You can activate this card the turn it was Set, by revealing 1 other face-down Trap you control. When a Spell/Trap Card is activated: You can activate 1 of these effects; ● Pay 1500 LP; negate the activation, and if you do, destroy it, and if you do that, neither player can activate cards, or the effects of cards, with the same original name as that destroyed card for the rest of this turn. ● Pay 3000 LP; negate the activation, and if you do, banish it, then your opponent banishes all cards from their hand and Deck with the same original name as that banished card.

Trap Counter

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

Trap Counter

When a monster(s) would be Special Summoned, OR a monster effect is activated: Pay 1500 LP; negate the Summon or activation, and if you do, destroy that card.

Trap Normal

When a monster(s) is Summoned: Destroy all monsters on the field.