Fiend / Effect

When this card inflicts Battle Damage to your opponent by a direct attack, remove from play all Synchro Monsters in your opponent's Graveyard, and inflict 1000 damage to your opponent for each monster removed.

Fiend / Effect

If this card successfully attacks directly, inflict 100 damage to your opponent for each card in their Extra Deck.

When an effect of an Attack Position monster your opponent controls is activated: Negate that effect, and if you do, change that monster to face-up Defense Position.

When an opponent's monster declares an attack: You take damage equal to the attacking monster's ATK, and if you do, banish that monster. During the End Phase of your opponent's next turn, Special Summon that monster to your side of the field.

Psychic / Tuner

When this removed from play card is Special Summoned, reveal the top 3 cards of your opponent's Deck. Choose 1 of those cards and remove it from play. Then, shuffle the others into the Deck.

Psychic / Tuner / Effect

You can activate 1 of these effects;

● Banish up to 1 LIGHT and up to 1 DARK monster from your hand and/or GY; increase or decrease this card's Level by the exact number banished, until the end of this turn.

● Target up to 2 of your banished monsters (1 LIGHT and/or 1 DARK); return them to the GY, and if you do, increase or decrease this card's Level by the exact number returned, until the end of this turn.

You can only use this effect of "Mental Tuner" once per turn.

Beast

Dis big ol' guy wit' a big ol' eye shoots a nasty ray beam right atcha!

Cyberse / Effect

If a Field Spell Card is activated: You can Special Summon this card from your hand, then, if face-up cards are in both Field Zones, this card cannot be destroyed by battle or card effects this turn. You can only use this effect of "Meowseclick" once per turn. During your turn, the effects of the face-up card in your opponent's Field Zone are negated. During your opponent's turn, the effects of the face-up card in your Field Zone are negated.

Tribute 1 "Cyber Angel" Ritual Monster from your hand or field; draw 2 cards, then place 1 card from your hand on the bottom of the Deck. For the rest of this turn after this card resolves, you cannot Special Summon monsters, except Ritual Monsters. You can only activate 1 "Merciful Machine Angel" per turn.

Cyberse / Xyz / Effect

2+ Level 9 monsters

If this card is Xyz Summoned: You can send 1 monster from your Extra Deck to the GY. You can target monsters in your GY, up to the number of materials this card has; detach materials from this card equal to the number of those targets in the GY, and if you do, attach those targets to this card as material. If this card is sent to the GY: You can target 1 face-up card on the field; negate its effects until the end of this turn. You can only use each effect of "Mereologic Aggregator" once per turn.

Spellcaster / Effect

You can only use each effect of "Merlin" once per turn.

● You can Tribute this card; Special Summon 1 "Noble Knight" monster from your Deck. You cannot Special Summon monsters the turn you activate this effect, except "Noble Knight" monsters.

● (Quick Effect): You can banish this card from your GY; immediately after this effect resolves, Synchro Summon 1 "Noble Knight" Synchro Monster using monsters you control.

● (Quick Effect): You can banish this card from your GY; immediately after this effect resolves, Xyz Summon 1 "Noble Knight" Xyz Monster using monsters you control.

Sea Serpent / Effect

Once per turn: You can target 1 face-up Level 3 or lower monster you control; equip that target to this card. (You can only equip 1 monster at a time to this card with this effect.) While equipped with a monster by this effect, this card gains 800 ATK. If this card would be destroyed, you can destroy the monster equipped to it with this effect, instead.

Aqua / Effect

While "Umi" is face-up on the field, this card can attack twice during the same Battle Phase.

Fish / Effect

When this card is Normal Summoned: You can add 1 Level 3, 4 or 5 Fish-Type monster from your Deck to your hand.

Sea Serpent / Link / Effect

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.

Aqua / Effect

You can discard 4 other "Mermail" monsters to the Graveyard; Special Summon this card from your hand. When you do: Target cards your opponent controls, up to the number of "Mermail" monsters in your Graveyard (if possible); this card gains 500 ATK, and if it does, destroy those targets (if any). You can Tribute 1 other face-up Attack Position "Mermail" monster; this card gains the following effect this turn.

● At the start of the Damage Step, if this card battles a Defense Position monster: Destroy that monster.

Aqua / Effect

When this card is added from your Deck or Graveyard to your hand by a card effect: You can Special Summon this card from your hand. You must control a "Mermail" monster to activate and to resolve this effect. When this card is Special Summoned by the effect of a "Mermail" monster: You can target 1 Level 3 or lower "Mermail" monster in your Graveyard; Special Summon that target. You can only use 1 "Mermail Abyssdine" effect per turn, and only once that turn.

Aqua / Xyz / Effect

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.

Aqua / Effect

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.

Aqua / Effect

If this card is sent to the Graveyard: You can Special Summon 1 "Mermail" monster from your hand, except "Mermail Abysshilde". You can only use the effect of "Mermail Abysshilde" once per turn.

Sea Serpent / Effect

You can discard 3 other WATER monsters to the GY; Special Summon this card from your hand. When Summoned this way: You can target 1 "Abyss-" Spell/Trap in your GY; add that target to your hand. You can Tribute 1 other Attack Position "Mermail" monster; send 1 random card from your opponent's hand to the GY. You can only use this effect of "Mermail Abyssleed" once per turn.

Aqua / Effect

If this card on the field is destroyed and sent to the Graveyard: You can Special Summon 1 "Mermail" monster from your Deck, except "Mermail Abysslinde". You can only use the effect of "Mermail Abysslinde" once per turn.

Fish / Effect

Your opponent cannot target face-up WATER monsters for attacks, except this one. All WATER monsters you control gain 300 ATK.

Fish / Effect

You can banish this card from your Graveyard to activate 1 of these effects;

● Increase the Levels of all "Mermail" monsters you currently control by 1.

● Increase the Levels of all "Mermail" monsters you currently control by 2.

Sea Serpent / Effect

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.