Abyss Soldier
ATK:
1800
DEF:
1300
Once per turn: You can discard 1 WATER monster to the Graveyard to target 1 card on the field; return it to the hand.
Alien Hunter
ATK:
1600
DEF:
800
If this card destroys a monster with an A-Counter by battle, it can attack once again in a row.
Alien Kid
ATK:
1600
DEF:
700
Place 1 A-Counter on all monsters Special Summoned to your opponent's side of the field. (If a monster with an A-Counter battles an "Alien" monster, it loses 300 ATK and DEF for each A-Counter during damage calculation only.)
Alien Mars
ATK:
1000
DEF:
1000
The effects of Effect Monsters with A-Counters are negated, except for "Alien Mars".
Alien Mother
ATK:
2300
DEF:
1500
If this card destroys a monster with an A-Counter by battle and sends it to the Graveyard, Special Summon the destroyed monster to your side of the field at the end of the Battle Phase. When this card is removed from the field, all monsters that were Special Summoned by this card's effect are destroyed.
Alien Overlord
ATK:
2200
DEF:
1600
You can remove 2 A-Counters from anywhere on the field to Special Summon this card from your hand. Once per turn, you can place 1 A-Counter on each face-up monster your opponent controls. (If a monster with an A-Counter battles an "Alien" monster, it loses 300 ATK and DEF for each A-Counter during damage calculation only.) You can only control 1 "Alien Overlord".
Alien Skull
ATK:
1600
DEF:
1800
You can Tribute 1 face-up Level 3 or lower monster on your opponent's side of the field to Special Summon this card to your opponent's side of the field. If you Special Summon this monster this way, place 1 A-Counter on this card, and you cannot Normal Summon or Set the same turn. (If a monster with an A-Counter battles an "Alien" monster, it loses 300 ATK and DEF for each A-Counter during damage calculation only.)
Alien Telepath
ATK:
1600
DEF:
1000
Once per turn, you can remove 1 A-Counter from an opponent's monster to destroy 1 Spell or Trap Card. (If a monster with an A-Counter battles an "Alien" monster, it loses 300 ATK and DEF for each A-Counter during damage calculation only.)
Alien Warrior
ATK:
1800
DEF:
1000
When this card is destroyed by battle and sent to the Graveyard, place 2 A-Counters on the monster that destroyed it. (If a monster with an A-Counter battles an "Alien" monster, it loses 300 ATK and DEF for each A-Counter during damage calculation only.)
Archfiend Cavalry
ATK:
1900
DEF:
0
If this card on the field is destroyed by card effect and sent to the GY: You can target 1 "Archfiend" monster in your GY, except "Archfiend Cavalry"; Special Summon it, but it cannot attack this turn.
Archfiend Emperor, the First Lord of Horror
ATK:
3000
DEF:
2000
You can Normal Summon this card without Tributing, but its original ATK/DEF become halved. If Summoned this way, this card is destroyed during the End Phase. You cannot Special Summon any monsters, except Fiend monsters. Once per turn: You can banish 1 "Archfiend" card from your hand or GY, then target 1 card on the field; destroy it.
Archfiend General
ATK:
2100
DEF:
800
You can discard this card to the Graveyard to add 1 "Pandemonium" from your Deck to your hand. If this card is on the field but "Pandemonium" is not on the field, destroy this card.
Armed Sea Hunter
ATK:
1800
DEF:
400
After damage calculation, if this card battles an Effect Monster: Negate the effects of that monster (including in the Graveyard). You must control another face-up WATER monster to activate and to resolve this effect. If this card would be destroyed, you can destroy 1 face-up Level 3 or lower WATER monster you control instead.
Citadel Whale
ATK:
2350
DEF:
2150
If this card is in your hand or GY: You can Tribute 2 WATER monsters; Special Summon this card. You can only use this effect of "Citadel Whale" once per turn. If this card is Special Summoned: You can Set 1 "Sea Stealth Attack" directly from your Deck. Once per turn, when your opponent activates a card or effect that targets 1 WATER monster you control (and no other cards) (Quick Effect): You can negate the activation, and if you do, destroy that card.
Cosmic Horror Gangi'el
ATK:
2600
DEF:
2000
If you're Tributing a monster on your side of the field that is owned by your opponent, this card can be Normal Summoned with 1 Tribute. Once per turn, you can place 1 A-Counter on a monster on your opponent's side of the field. (If a monster with an A-Counter battles an "Alien" monster, it loses 300 ATK and DEF for each A-Counter during damage calculation only.)
Darkbishop Archfiend
ATK:
300
DEF:
1400
The controller of this card pays 500 Life Points during each of his/her Standby Phases (this is not optional). When an Archfiend Monster Card on your side of the field is targeted by the effect of a card controlled by your opponent, when resolving the effect, roll a six-sided die. If the result is 1, 3, or 6, negate the effect and destroy the opponent's card.
Desmanian Devil
ATK:
1700
DEF:
1400
When this card destroys an opponent's monster by battle: You can add 1 Level 4 or lower Beast monster from your Deck to your hand.
Desrook Archfiend
ATK:
1100
DEF:
1800
The controller of this card pays 500 Life Points during each of his/her Standby Phases (this is not optional). When this card is targeted by the effect of a card controlled by your opponent, when resolving the effect, roll a six-sided die. If the result is 3, negate the effect and destroy the opponent's card. When a "Terrorking Archfiend" on your side of the field is destroyed and sent to the Graveyard, you can send this card from your hand to the Graveyard to Special Summon the "Terrorking Archfiend".
Duoterion
ATK:
2000
DEF:
1400
You can discard this card; add 1 "Bonding" Spell/Trap from your Deck to your hand. If this card is Normal or Special Summoned: You can target 1 "Hydrogeddon", "Oxygeddon", or "Duoterion" in your GY; Special Summon it. You can only use each effect of "Duoterion" once per turn.
Elemental HERO Captain Gold
ATK:
2100
DEF:
800
You can discard this card to the Graveyard; add 1 "Skyscraper" from your Deck to your hand. If "Skyscraper" is not face-up on the field, destroy this card.
Fishborg Planter
ATK:
200
DEF:
200
Once, while this card is in the GY: You can send the top card of your Deck to the GY, then, if it is a WATER monster, Special Summon this card from the GY. You can only use this effect of "Fishborg Planter" once per turn.
Flying Saucer Muusik'i
ATK:
1000
DEF:
2000
While this card is face-up on the field, you can select and add 1 "Alien" card from your Deck to your hand instead of conducting your normal draw during your Draw Phase.
Gishki Avance
ATK:
1500
DEF:
800
Once per turn: You can choose 1 "Gishki" monster from your Deck and place it on top of your Deck.
Gishki Beast
ATK:
1500
DEF:
1300
When this card is Normal Summoned: You can target 1 Level 4 or lower "Gishki" monster in your Graveyard; Special Summon that target in face-up Defense Position.
Gishki Chain
ATK:
1800
DEF:
1000
If this card is Normal Summoned: Look at the top 3 cards of your Deck, you can reveal 1 Ritual Monster or 1 Ritual Spell Card among them and add it to your hand, also after that, place any remaining cards on the top of your Deck in any order.
Gishki Mollusk
ATK:
1700
DEF:
900
When this card is sent to the Graveyard by a card effect: Look at the top 3 cards of your Deck, then return them all to the top or to the bottom of the Deck, in any order.
Gishki Noellia
ATK:
1700
DEF:
1000
When this card is Normal Summoned: You can excavate the top 5 cards of your Deck, send any excavated Ritual Spell Cards and "Gishki" monsters to the Graveyard, also place the other cards on the bottom of your Deck in any order.
Gishki Reliever
ATK:
500
DEF:
800
When this card is Normal or Flip Summoned: You can target 1 other monster you control; return that target to the hand. You must control another face-up "Gishki" monster to activate and to resolve this effect.
Gishki Vanity
ATK:
1000
DEF:
800
During your Main Phase: You can discard this card; this turn, your opponent cannot activate Spells, Traps, Spell/Trap effects, or Monster Card effects when a "Gishki" monster is Ritual Summoned, or when a "Gishki" Ritual Spell Card is activated.
Golden Flying Fish
ATK:
1700
DEF:
1000
You can Tribute 1 other Fish-Type monster, then target 1 card on the field; destroy that target.
Hundred-Footed Horror
ATK:
2600
DEF:
1300
If your opponent controls a monster and you control no monsters, you can Normal Summon this card without Tributing, but its original ATK becomes 1300.
Imprisoned Queen Archfiend
ATK:
2600
DEF:
1700
During each of your Standby Phases, you must pay 1000 Life Points (this is not optional), or this card is destroyed. During your Standby Phase: Target 1 Level 4 or lower Fiend-Type monster on the field; that target gains 1000 ATK until the End Phase. "Pandemonium" must be on the field and this card must be in your Graveyard to activate and to resolve this effect.
Infernalqueen Archfiend
ATK:
900
DEF:
1500
The controller of this card pays 500 Life Points during each of his/her Standby Phases (this is not optional). When this card is targeted by the effect of a card controlled by your opponent, when resolving the effect, roll a six-sided die. If the result is 2 or 5, negate the effect and destroy the opponent's card. As long as this card remains on the field, during each Standby Phase, increase the ATK of 1 Archfiend Monster Card by 1000 points until the End Phase.
Interplanetarypurplythorny Beast
ATK:
1100
DEF:
2200
When a monster you control is destroyed by battle and sent to the Graveyard, while this card is in your Graveyard: You can Special Summon this card from your Graveyard. If Summoned this way, banish this card when it leaves the field. You can only use the effect of "Interplanetarypurplythorny Beast" once per turn.
Mermaid Archer
ATK:
1200
DEF:
200
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.
Mirror Ladybug
ATK:
100
DEF:
100
If you control at least 1 face-up monster and have no monsters in your Graveyard, you can Special Summon this card from your hand. When this card is Special Summoned this way, this card's Level becomes equal to the total Levels of all other monsters you control. If the Level of this card is higher than 12, destroy this card.
Mystic Piper
ATK:
0
DEF:
0
You can Tribute this card to draw and reveal 1 card. If that card is a Level 1 Monster Card, draw 1 more card. The effect of "Mystic Piper" can only be activated once per turn.
Pandemonium Watchbear
ATK:
1300
DEF:
1800
As long as this card remains face-up on your side of the field, "Pandemonium" on your side of the field is not destroyed by your opponent's card effects.
Plasma Ball
ATK:
900
DEF:
900
This card can attack your opponent directly. When this card inflicts Battle Damage to your opponent by a direct attack: Destroy this card.
Power Breaker
ATK:
1900
DEF:
0
If this card in your possession is destroyed by your opponent's attack or card effect and sent to your Graveyard: Target 1 face-up Spell/Trap Card your opponent controls; destroy that target. If this card attacks, it is changed to Defense Position at the end of the Damage Step.
Shadowknight Archfiend
ATK:
2000
DEF:
1600
The controller of this card pays 900 Life Points during each of his/her Standby Phases (this is not optional). When this card is targeted by the effect of a card controlled by your opponent, when resolving the effect, roll a six-sided die. If the result is 3, negate the effect and destroy the opponent's card. The Battle Damage this card inflicts to your opponent is halved.
Skull Archfiend of Lightning
ATK:
2500
DEF:
1200
During each of your Standby Phases, you must pay 500 Life Points (this is not optional), or this card is destroyed. Before resolving an opponent's card effect that targets this card, roll a six-sided die, negate the effect if you roll 1, 3, or 6, and if you do, destroy that card.
Spined Gillman
ATK:
1300
DEF:
0
All Fish, Sea Serpent, and Aqua-Type monsters you control gain 400 ATK.
Terrene Toothed Tsuchinoko
ATK:
1600
DEF:
500
When this card is Special Summoned: Change all other Special Summoned monsters on the field to face-down Defense Position. You can only use the effect of "Terrene Toothed Tsuchinoko" once per turn.
Terrorking Archfiend
ATK:
2000
DEF:
1500
This card cannot be Normal Summoned or Flip Summoned unless you have an Archfiend Monster Card on your side of the field. The controller of this card pays 800 Life Points during each of his/her Standby Phases (this is not optional). When this card is targeted by the effect of a card controlled by your opponent, when resolving the effect, roll a six-sided die. If the result is 2 or 5, negate the effect and destroy the opponent's card. The effects of an Effect Monster that this card destroyed as a result of battle are negated.
The Despair Uranus
ATK:
2900
DEF:
2300
When this card is Tribute Summoned while you control no Spell/Trap Cards: You can activate this effect; your opponent declares either Continuous Spell or Continuous Trap, then you Set 1 card of that type directly from your Deck. This card gains 300 ATK for each face-up Spell/Trap Card you control. Face-up cards in your Spell & Trap Zone cannot be destroyed by card effects.
The Legendary Fisherman II
ATK:
2200
DEF:
1800
This card's name becomes "The Legendary Fisherman" while on the field or in the GY. While "Umi" is on the field, this card is unaffected by other monsters' effects. If this face-up card is destroyed by battle, or leaves the field because of an opponent's card effect while its owner controls it: You can add 1 Level 7 WATER monster from your Deck to your hand.
Vilepawn Archfiend
ATK:
1200
DEF:
200
The controller of this card pays 500 Life Points during each of his/her Standby Phases (this is not optional). When this card is targeted by the effect of a card controlled by your opponent, when resolving the effect, roll a six-sided die. If the result is 3, negate the effect and destroy the opponent's card. As long as this card remains on the field, your opponent cannot attack any Archfiend Monster Card on your side of the field except "Vilepawn Archfiend".
Warrior of Atlantis
ATK:
1900
DEF:
1200
You can discard this card to the Graveyard; add 1 "A Legendary Ocean" from your Deck to your hand.
Water Dragon Cluster
ATK:
2800
DEF:
2600
Cannot be Normal Summoned/Set. Must be Special Summoned with the effect of a "Bonding" Spell/Trap. If this card is Special Summoned: You can activate this effect; Effect Monsters your opponent currently controls cannot activate their effects for the rest of this turn, also change their ATK to 0 until the end of this turn. (Quick Effect): You can Tribute this card; Special Summon 2 "Water Dragon" from your hand and/or Deck in Defense Position, ignoring their Summoning conditions.
Alien Grey
ATK:
300
DEF:
800
FLIP: Place 1 A-Counter on 1 face-up monster on your opponent's side of the field. (If a monster with an A-Counter battles an "Alien" monster, it loses 300 ATK and DEF for each A-Counter during damage calculation only.) After this card has been flipped face-up, when it is destroyed by battle and sent to the Graveyard, draw 1 card.
Slate Warrior
ATK:
1900
DEF:
400
FLIP: This card gains 500 ATK and DEF. If this card is destroyed by battle: The monster that destroyed it loses 500 ATK and DEF.
Mokey Mokey King
ATK:
300
DEF:
100
"Mokey Mokey" + "Mokey Mokey" + "Mokey Mokey" When this card is removed from the field, you can Special Summon as many "Mokey Mokey" as possible from your Graveyard.
Alien Hypno
ATK:
1600
DEF:
700
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it be treated as an Effect Monster with this effect: ● During your Main Phase, you can select 1 monster your opponent controls with an A-Counter(s), and take control of it while this card is on the field. During each of your End Phases, remove 1 A-Counter from each controlled monster. If all A-Counters are removed from one of these monsters, destroy it.
Alien Shocktrooper
ATK:
1900
DEF:
800
The Aliens have used a mysterious biological substance to create a supreme race of soldiers. They do not have the natural powers of the other Aliens, but can make stunning physical attacks.
Archfiend Soldier
ATK:
1900
DEF:
1500
An expert at battle who belongs to a crack diabolical unit. He's famous because he always gets the job done.
Mokey Mokey
ATK:
300
DEF:
100
An outcast angel. Nobody knows what he is thinking at all. Sometimes he gets mad and that is dreadful.
Evigishki Levianima
ATK:
2700
DEF:
1500
You can Ritual Summon this card with any "Gishki" Ritual Spell Card. When this card declares an attack: Draw 1 card, and if you do, reveal it, then if it was a "Gishki" monster, look at 1 random card in your opponent's hand.
Evigishki Mind Augus
ATK:
2500
DEF:
2000
You can Ritual Summon this card with any "Gishki" Ritual Spell Card. When this card is Ritual Summoned: Target up to 5 cards in any Graveyard(s); shuffle those targets into the Deck.
Evigishki Tetrogre
ATK:
2600
DEF:
2100
You can Ritual Summon this card with any "Gishki" Ritual Spell Card. Once per turn: You can declare 1 card type (Monster, Spell, or Trap); your opponent can discard 1 card to negate this card's effect, otherwise both players send 1 card of the declared type from their Main Deck to the Graveyard.
Gishki Psychelone
ATK:
2150
DEF:
1650
You can Ritual Summon this card with any "Gishki" Ritual Spell Card. Once per turn: You can declare 1 Monster Type and Attribute; look at 1 random card in your opponent's hand, and if it is a monster of the declared Type and Attribute, shuffle it into the Deck. Otherwise, return it to the hand.
"A" Cell Breeding Device
During each of your Standby Phases, put 1 A-Counter on 1 face-up monster your opponent controls.
"A" Cell Incubator
Each time an A-Counter(s) is removed from play by a card effect, place 1 A-Counter on this card. When this card is destroyed, distribute the A-Counters on this card among face-up monsters.
"A" Cell Recombination Device
Target 1 face-up monster on the field; send 1 "Alien" monster from your Deck to the Graveyard, and if you do, place A-Counters on that monster equal to the Level of the sent monster. During your Main Phase, except the turn this card was sent to the Graveyard: You can banish this card from your Graveyard; add 1 "Alien" monster from your Deck to your hand.
"A" Cell Scatter Burst
Select 1 face-up "Alien" monster you control. Destroy it and distribute new A-Counters equal to its Level among your opponent's face-up monsters.
Axe of Fools
The equipped monster gains 1000 ATK, also its effects are negated. Once per turn, during your Standby Phase: Inflict 500 damage to the controller of the equipped monster.
Bonding - D2O
Tribute 2 "Duoterion" and 1 "Oxygeddon" in your hand and/or field; Special Summon 1 "Water Dragon" or "Water Dragon Cluster" from your hand, Deck, or GY. (This is treated as a Special Summon with the effect of "Bonding - H2O".) If "Water Dragon" or "Water Dragon Cluster" is sent from the field to your GY while this card is in your GY: Add this card to your hand. You can only use this effect of "Bonding - D2O" once per turn.
Checkmate
Tribute 1 Archfiend monster on your side of the field. During this turn, 1 "Terrorking Archfiend" on your side of the field can attack your opponent's Life Points directly.
Corruption Cell "A"
Place 1 A-Counter on 1 face-up monster on your opponent's side of the field.
Different Dimension Deepsea Trench
When this card resolves: Banish 1 WATER monster from your hand, Graveyard, or face-up on your field. Then, when this face-up card on the field is destroyed: Special Summon that banished monster to your side of the field.
Downbeat
Tribute 1 face-up monster; Special Summon from your Deck, 1 monster with the same original Type and Attribute that the Tributed monster had on the field, but 1 Level lower. You can only activate 1 "Downbeat" per turn.
Forbidden Arts of the Gishki
This card can be used to Ritual Summon any "Gishki" Ritual Monster. You must also Tribute face-up monsters from anywhere on the field, whose total Levels equal the Level of the Ritual Monster you Ritual Summon. Halve the ATK of the monster Ritual Summoned by this effect. You cannot conduct your Battle Phase the turn you activate this card.
Gishki Aquamirror
This card can be used to Ritual Summon any "Gishki" Ritual Monster. You must also Tribute monsters from the field or your hand whose total Levels equal the Level of the Ritual Monster you Ritual Summon. You can shuffle this card from the Graveyard into the Deck to target 1 "Gishki" Ritual Monster in your Graveyard; return that target to the hand.
Gishki Photomirror
This card can be used to Ritual Summon any "Gishki" Ritual Monster. You must also pay Life Points equal to the Level of the Ritual Summoned monster x 500 (when this card resolves).
Lemuria, the Forgotten City
This card's name is treated as "Umi". All WATER monsters gain 200 ATK and DEF. Once per turn, during your Main Phase: You can have all WATER monsters you currently control gain Levels equal to the number of WATER monsters you currently control, until the End Phase.
Mistaken Arrest
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.
Mokey Mokey Smackdown
While a face-up "Mokey Mokey" is on your side of the field, if a Fairy-Type monster on your side of the field is destroyed, the ATK of each "Mokey Mokey" on your side of the field becomes 3000 until the end of this turn.
Mysterious Triangle
Destroy 1 monster on the field with an A-Counter. Then, you can Special Summon 1 Level 4 "Alien" monster from your Deck. Destroy it during the End Phase.
Otherworld - The "A" Zone
If your opponent's monster battles an "Alien" monster you control, the opponent's monster loses 300 ATK and DEF during damage calculation only.
Pandemonium
Neither player has to pay Life Points during the Standby Phase for "Archfiend" monsters. Each time a player's "Archfiend" monster(s) is destroyed and sent to the Graveyard, except by battle, that player can add 1 "Archfiend" monster from their Deck to their hand that is a lower Level than the destroyed card.
Salvage
Target 2 WATER monsters with 1500 or less ATK in your Graveyard; add those targets to your hand.
Ties of the Brethren
Pay 2000 LP, then target 1 Level 4 or lower monster you control; for the rest of this turn after this card resolves, you cannot Special Summon monsters, also Special Summon 2 monsters from your Deck, with the same Type, Attribute, and Level as that monster, but with different names from each other and that monster. You cannot conduct your Battle Phase the turn you activate this card.
Absolute End
Activate only during your opponent's turn. This turn, the attacks from your opponent's monsters become direct attacks.
Aquamirror Illusion
Special Summon 1 "Gishki" Ritual Monster from your hand. It cannot attack, and is returned to the hand during the End Phase.
Aquamirror Meditation
Reveal 1 Ritual Spell Card in your hand to target 2 "Gishki" monsters in your Graveyard; return them to the hand.
Archfiend's Roar
Pay 500 Life Points, then target 1 "Archfiend" monster in your Graveyard; Special Summon that target. It cannot be Tributed. Destroy it during the End Phase of this turn.
Bonding - DHO
Shuffle 1 "Duoterion", 1 "Hydrogeddon", and 1 "Oxygeddon" from your hand and/or GY into the Deck; Special Summon 1 "Water Dragon Cluster" from your hand or GY. You can banish this card from your GY; add 1 "Water Dragon" or "Water Dragon Cluster" from your Deck or GY to your hand.
Brainwashing Beam
Select 1 monster with at least 1 A-Counter on your opponent's side of the field and take control of that monster. During each of your End Phases, remove 1 A-Counter from that controlled monster. If all A-Counters are removed from that monster, or that monster is destroyed, destroy this card.
Call of the Archfiend
You can target 1 Level 5 or higher Fiend monster in your GY; discard 1 Fiend monster, and if you do, Special Summon the targeted monster. You can only use this effect of "Call of the Archfiend" once per turn.
Crop Circles
Send any number of monsters from your side of the field to the Graveyard to activate this card. Select from your Deck 1 "Alien" monster whose Level is equal to the total Levels of the sent monsters, and Special Summon it. If you fail to find a monster to Special Summon, you take 2000 damage.
Damage Diet
Halve all damage you take this turn. You can banish this card from your Graveyard; halve all effect damage you take this turn. (You cannot halve the same damage twice with this effect.)
Damage Vaccine Omega MAX
When you take damage by battle or by a card effect: Gain Life Points equal to the damage you took.
Fish Rain
When a face-up Fish, Sea Serpent, or Aqua-Type monster on the field is banished: Special Summon 1 Level 3 or lower Fish, Sea Serpent, or Aqua-Type monster from your hand. (The banished monster(s) must be Fish, Sea Serpent, or Aqua-Type even after being banished.)
Mythical Bestiamorph
Each time an opponent's monster effect is activated, place 1 Spell Counter on this card when that effect resolves. You can send this card with 6 or more Spell Counters to the GY; add 1 Spell from your Deck to your hand. You can only use this effect of "Mythical Bestiamorph" once per turn.
Orbital Bombardment
Send 1 "Alien" monster from your side of the field to the Graveyard to activate this card. Destroy 1 Spell or Trap Card on the field.
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.
Showdown of the Secret Sense Scroll Techniques
When your opponent activates a Spell/Trap Card, or monster effect, with the same name as a card in their GY: Negate the activation, and if you do, destroy that card.
Underworld Egg Clutch
When a face-up Fish, Sea Serpent, or Aqua-Type monster you control is banished: Add 1 Level 4 or lower Fish, Sea Serpent, or Aqua-Type monster from your Deck to your hand.