Mermail Deck Breakdown

WATER 3

You can discard this card and 1 WATER monster; look at your opponent's hand and banish 1 card from their hand face-up, until the End Phase. If this card is Special Summoned: You can send the top 3 cards of your Deck to the GY, then target 1 Level 4 or lower WATER monster in your GY, except "Deep Sea Minstrel"; place it on the top or bottom of the Deck. You can only use each effect of "Deep Sea Minstrel" once per turn.

WATER 3

(This card is always treated as an "Atlantean" card.) You can discard 1 card to the GY; WATER monsters you currently control become Level 7 until the end of this turn. If this card is sent to the GY to activate a WATER monster's effect: Special Summon 1 Level 4 or lower "Atlantean" or "Mermail" monster from your Deck, except "Mermail Shadow Squad", also you cannot Special Summon from the Extra Deck for the rest of this turn, except WATER monsters. You can only use each effect of "Mermail Shadow Squad" once per turn.

WATER 7

You can discard 1 other WATER monster to the GY; Special Summon this card from your hand. When Summoned this way: You can add 1 Level 4 or lower "Mermail" monster from your Deck to your hand. You can only use this effect of "Mermail Abyssteus" once per turn.

WATER 4

When this card is Normal or Special Summoned: You can discard 1 WATER monster to the Graveyard; add 1 Level 3 WATER monster from your Deck to your hand. You can only use this effect of "Mermail Abysspike" once per turn.

WATER 4

All Level 3 or lower Sea Serpent-Type monsters you control can attack your opponent directly. When this card is sent to the Graveyard to activate a WATER monster's effect: Add 1 Sea Serpent-Type monster from your Deck to your hand, except "Atlantean Dragoons".

WATER 3

When this card inflicts battle damage to your opponent: You can Special Summon 1 Level 4 or lower "Atlantean" Sea Serpent-Type monster from your Deck, except "Atlantean Marksman". When this card is sent to the Graveyard to activate a WATER monster's effect: Target 1 Set card your opponent controls; destroy that target.

WATER

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.

WATER 3

If this card is discarded to the Graveyard: You can target 1 "Mermail" monster in your Graveyard, except "Mermail Abyssgunde"; Special Summon that target. You can only use the effect of "Mermail Abyssgunde" once per turn.

Spell Equip

Special Summon 1 "Atlantean" or "Mermail" monster from your hand or GY, and if you do, equip it with this card. If the equipped monster would be destroyed by battle or card effect, you can send this card to the GY instead. You can banish this card from your GY, then target up to 3 of your Fish, Sea Serpent, and/or Aqua monsters that are banished or in your GY; shuffle them into the Deck. You can only use this effect of "Abyss-sting Triaina" once per turn. You can only activate 1 "Abyss-sting Triaina" per turn.

LIGHT 5

You can Set this card from your hand to your Spell & Trap Zone as a Spell. During your opponent's turn, if this Set card in the Spell & Trap Zone is destroyed and sent to your GY: Special Summon it. During your opponent's turn (Quick Effect): You can Tribute this card from your hand or face-up field; neither player can banish cards for the rest of this turn.

Spell Quick

Send any number of other cards from your hand and/or field to the GY; choose that many Effect Monsters your opponent controls, and until the end of this turn, their ATK is halved, also their effects are negated. In response to this card's activation, your opponent cannot activate cards, or the effects of cards, with the same original type (Monster/Spell/Trap) as the cards sent to the GY to activate this card. You can only activate 1 "Forbidden Droplet" per turn.

WATER

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.

WATER

2+ monsters, including a Fish, Sea Serpent, or Aqua monster Your opponent cannot target WATER monsters this card points to with card effects. You can only use each of the following effects of "Mermail King - Neptabyss" once per turn. If a WATER monster(s) is sent to the GY to activate a card or effect (except during the Damage Step): You can take 1 "Abyss-" Equip Spell from your Deck or GY and either add it to your hand or equip it to this card. If this card in its owner's possession is destroyed by an opponent's card: You can add 1 "Atlantean" or "Mermail" monster from your Deck to your hand.

WATER 4

If you control no cards (Quick Effect): You can discard this card; apply these effects this turn. ● Each time your opponent Normal or Special Summons a monster(s) from the hand, immediately draw 1 card. ● Once, during this End Phase, if the number of cards in your hand is more than the number of cards your opponent controls +6, you must randomly shuffle cards from your hand into the Deck so the number in your hand equals the number your opponent controls +6. You can only activate 1 other "Mulcharmy" monster effect, the turn you activate this effect.

WATER

3 Level 7 monsters Once per turn, you can also Xyz Summon "Poseidra Abyss, the Atlantean Dragon Lord" by using 1 "Atlantean" or "Mermail" Xyz Monster you control. (Transfer its materials to this card.) Once per turn: You can detach 2 materials from this card, then send 1 WATER monster from your hand or Deck to the GY; return up to 3 cards your opponent controls to the hand. If this Xyz Summoned card is sent to the GY: You can discard 1 card to the GY; Special Summon 3 Level 3 or lower Fish, Sea Serpent, and/or Aqua monsters from your hand and/or GY.

WATER 3

(This card is always treated as a "Mermail" card.) You can Tribute this card from your hand and 1 "Atlantean" or "Mermail" monster from your hand or field; take 1 Level 7 Fish, Sea Serpent, or Aqua monster from your Deck and either add it to your hand or Special Summon it, also you cannot Special Summon from the Extra Deck for the rest of this turn, except WATER monsters. During your opponent's turn (Quick Effect): You can banish this card from your GY and discard 1 card to the GY; draw 1 card. You can only use each effect of "Abyssrhine, the Atlantean Spirit" once per turn.

WATER

2 Level 7 WATER monsters While this face-up card has Xyz Material, Level 5 or higher monsters cannot attack. Once per turn, during either player's turn: You can detach 1 Xyz Material from this card; negate the effects of all face-up monsters your opponent currently controls that have less ATK than this card, until the end of the turn.

WATER

1+ Effect Monsters You can only control 1 "Worldsea Dragon Zealantis". You can only use each of the following effects of "Worldsea Dragon Zealantis" once per turn. During your Main Phase: You can banish all monsters on the field, then Special Summon as many monsters as possible that were banished by this effect, to their owners' fields, face-up, or in face-down Defense Position. During the Battle Phase (Quick Effect): You can destroy cards on the field up to the number of co-linked monsters on the field.

WATER 1

You can send 1 "Atlantean" monster from your Deck to the Graveyard, except "Neptabyss, the Atlantean Prince"; add 1 "Atlantean" card from your Deck to your hand, except "Neptabyss, the Atlantean Prince". If this card is sent to the Graveyard to activate a WATER monster's effect: Target 1 "Atlantean" monster in your Graveyard, except "Neptabyss, the Atlantean Prince"; Special Summon it. You can only use each effect of "Neptabyss, the Atlantean Prince" once per turn.

WATER 3

During either turn, except the End Phase (Quick Effect): You can discard this card; apply this effect this turn. You can only use this effect of "Ghost Sister & Spooky Dogwood" once per turn. ● Each time your opponent Special Summons an Effect Monster(s) during the Main Phase or Battle Phase, you gain LP equal to that monster's ATK. If you did not gain LP by this effect, your LP are halved during the End Phase.

WATER

2 Level 4 WATER monsters Once per turn: You can detach 1 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.

WATER

2 Level 4 monsters While this card has a material attached that was originally WATER, all WATER monsters you control gain 500 ATK. Once per turn (Quick Effect): You can detach 1 material from this card; your opponent cannot activate any card effects in their GY this turn.

WATER

2+ Level 7 WATER monsters WATER monsters you control gain 300 ATK/DEF for each material attached to this card. You can only use each of the following effects of "Abysstrite, the Atlantean Spirit" once per turn. If this card is Xyz Summoned: You can target 1 Level 7 or lower Fish, Sea Serpent, or Aqua monster in your GY; Special Summon it. You can detach 1 material from this card; Set 1 "Abyss-" Trap from your Deck.

Spell Quick

Target 1 monster in your opponent's GY; banish it, and if you do, until the end of the next turn, its effects are negated, as well as the activated effects and effects on the field of monsters with the same original name.

WATER

2 WATER monsters You can target 1 WATER monster with 1500 or less ATK in your GY; Special Summon it to your zone this card points to, also you cannot Special Summon monsters for the rest of this turn, except WATER monsters. If this card is sent from the field to the GY: You can target 1 "Marincess" card in your GY, except "Marincess Coral Anemone"; add it to your hand. You can only use each effect of "Marincess Coral Anemone" once per turn.

Spell Normal

Send 1 monster from your hand to the GY; Special Summon 1 Level 1 monster from your hand or Deck.

Trap Normal

Draw cards equal to the number of different Monster Types among the monsters you control that are Fish, Sea Serpent, or Aqua, also you cannot Special Summon from the Extra Deck until the end of your next turn after this card resolves, except WATER monsters. If a face-up WATER monster(s) you control is destroyed by battle or card effect while this card is in your GY: You can banish this card; add 1 "Mermail" monster from your GY or banishment to your hand. You can only use each effect of "Abyss-team" once per turn.

WATER 7

Once per turn: You can discard 1 card; Special Summon as many Level 4 or lower Fish-Type monsters as possible from your Deck, but they cannot declare an attack and their effects are negated. During either player's turn, when this face-up card on the field is targeted by a card effect: You can Tribute 1 other Fish-Type monster; negate the activation, and if you do, destroy that card.

WATER 7

Your opponent's monsters cannot target this card for attacks while you control a monster other than "Poseidra, the Rumbling Atlantean". You can only use each of the following effects of "Poseidra, the Rumbling Atlantean" once per turn. You can send 1 other WATER monster from your hand or face-up field to the GY; Special Summon this card from your hand. If this card is Normal or Special Summoned: You can send 1 "Atlantean" or "Mermail" monster from your Deck to the GY, then target 1 card your opponent controls; return it to the hand.

WATER

2 Level 3 monsters If this card is Special Summoned: You can add 1 "Virtue Stream" from your Deck to your hand. You can activate 1 of these effects; ● Detach 1 material from a monster you control, then add 1 Fish, Sea Serpent, or Aqua monster from your GY to your hand, except "LeVirtue Dragon". ● Target 2 Xyz Monsters on the field; attach 1 material from 1 of those monsters to the other. You can only use each effect of "LeVirtue Dragon" once per turn.

Trap Normal

Target 1 face-up monster your opponent controls; negate its effects (until the end of this turn), then, if this card was Set before activation and is on the field at resolution, for the rest of this turn all other Spell/Trap effects in this column are negated. If you control no cards, you can activate this card from your hand.

Trap Normal

If your opponent controls a card, you can activate this card from your hand. When a card or effect is activated that includes an effect that Special Summons a monster(s): Negate that effect, then if you have a Trap in your GY, destroy that card. If you activated this card from your hand, you cannot activate the effects of LIGHT, EARTH, and WIND monsters for the rest of this Duel. You can only activate 1 "Dominus Impulse" per turn.

Trap Normal

Target 1 Fish, Sea Serpent, or Aqua monster you control and 2 cards your opponent controls; destroy them. You can banish this card from your GY, then target 1 face-up monster on the field; if it is a WATER monster, the next time it would be destroyed by card effect this turn, it is not destroyed. If it is not, it becomes WATER. You can only use each effect of "Virtue Stream" once per turn.

WATER 8

Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by having exactly 5 WATER monsters in your GY. If this card is Special Summoned: Discard 2 random cards from your opponent's hand (or their entire hand, if less than 2). You can only use this effect of "Moulinglacia the Elemental Lord" once per turn. If this face-up card leaves the field, skip the Battle Phase of your next turn.

WATER

2 Fish, Sea Serpent, and/or Aqua monsters Monsters this card points to gain 500 ATK/DEF. You can only use each of the following effects of "Mermail Abyssalacia" once per turn. ● During your opponent's turn (Quick Effect): You can send 1 card from your hand to the GY; add 1 "Mermail" monster from your Deck to your hand. ● If this card in its owner's possession is destroyed by an opponent's attack or card effect: You can send 1 WATER monster from your Deck to the GY, then target 1 WATER monster in your GY; Special Summon it in Defense Position.

Spell Normal

If you control no face-up cards: Activate 1 of these effects; ● Destroy all Attack Position monsters your opponent controls. ● Destroy all Spells and Traps your opponent controls. You can only activate 1 "Lightning Storm" per turn.

WATER 2

During your Main Phase, you can Normal Summon 1 Level 4 or lower Sea Serpent-Type monster in addition to your Normal Summon/Set. (You can only gain this effect once per turn.) When this card is sent to the Graveyard to activate a WATER monster's effect: Target 1 face-up card your opponent controls; destroy that target.

Spell Normal

Destroy all Spell and Trap Cards your opponent controls.

WATER 7

You can discard 2 other WATER monsters to the GY; Special Summon this card from your hand. When Summoned this way: You can add 1 "Abyss-" Spell/Trap from your Deck to your hand. You can Tribute 1 other Attack Position WATER monster; this card can make a second attack during each Battle Phase this turn.