30th Classic Collection

Basic

{Water} Expert Splasher 10+
Flip 2 coins. If both of them are heads, this attack does 20 more damage.

Weakness {Lightning} ×2

Retreat {Colorless}

Magikarp

Mega Rising

{Water}{Water}{Colorless} Waterfall Evolution
Put a random card from your deck that evolves from this Pokémon onto this Pokémon to evolve it.

Weakness {Lightning} +20

Retreat {Colorless}

Wisdom of Sea and Sky

{Water} Splashing Dodge 10
Flip a coin. If heads, during your opponent's next turn, prevent all damage from—and effects of—attacks done to this Pokémon.

Weakness {Lightning} +20

Retreat {Colorless}

{Water} Leap Out
Switch this Pokémon with 1 of your Benched Pokémon.

Weakness {Lightning} +20

Retreat {Colorless}

Destined Rivals

Ability So Submerged
As long as this Pokémon is on your Bench, prevent all damage from and effects of attacks from your opponent's Pokémon done to this Pokémon.

{Water} Splash 10

Weakness {Lightning} ×2

Retreat {Colorless}

Misty's Magikarp

Mythical Island

Genetic Apex

{Colorless} Splash 10

Weakness {Lightning} +20

Retreat {Colorless}

My First Battle

{Water} Splashy Splash
Flip a coin until you get tails. For each heads, draw a card.

Weakness {Lightning} ×2

Retreat {Colorless}

Paldea Evolved

Scarlet & Violet

{Water} Jump
Flip a coin. If heads, this attack does 10 damage to 1 of your opponent's Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Weakness {Lightning} ×2

Retreat {Colorless}

Pokémon GO

{Colorless} Lively Grouping
Search your deck for any number of Magikarp, reveal them, and put them into your hand. Then, shuffle your deck.
{Colorless}{Colorless} Raging Fin 10+
This attack does 30 more damage for each Magikarp and Gyarados in your discard pile.

Weakness {Lightning} ×2

Retreat {Colorless}

Celebrations Classic Collection

{Water} Gold Scale
Your opponent may draw 2 cards. Either way, you may draw 2 cards.
{Psychic} Dragon Bond
Search your deck for a card named Gyarados, Dark Gyarados, or Shining Gyarados. Show it to your opponent and put it into your hand. Shuffle your deck afterward.

Weakness {Lightning} 

Retreat {Colorless}

Shining Magikarp

Rebel Clash

{Colorless} Leap Out
Switch this Pokémon with 1 of your Benched Pokémon.

Weakness {Lightning} ×2

Retreat {Colorless}

Hidden Fates

{Colorless} Splash 10

Weakness {Lightning} ×2

Retreat {Colorless}

Detective Pikachu

{Water} Hold Still
Heal 10 damage from this Pokémon.

Weakness {Lightning} ×2

Retreat {Colorless}

Team Up

{Water} Enter the Dragon
Flip a coin. If heads, put a card that evolves from this Pokémon from your discard pile onto this Pokémon to evolve it.

Weakness {Lightning} ×2

Retreat {Colorless}

TAG TEAM-GX

{Water}{Water}{Water}{Water}{Water} Super Splash 180
{Water} Towering Splash GX 10
If this Pokémon has at least 7 extra Water Energy attached to it (in addition to this attack’s cost), this attack does 100 damage to each of your opponent’s Benched Pokémon. (Don’t apply Weakness and Resistance for Benched Pokémon.) (You can’t use more than 1 GX attack in a game.)

Weakness {Grass} ×2

Retreat {Colorless}{Colorless}{Colorless}{Colorless}

Magikarp & Wailord GX

Dragon Majesty

{Water} Water Splash 10+
Flip a coin. If heads, this attack does 10 more damage.

Weakness {Lightning} ×2

Retreat {Colorless}

Crimson Invasion

Ability Submerge
As long as this Pokémon is on your Bench, prevent all damage done to this Pokémon by attacks (both yours and your opponent’s).

{Water}{Colorless}{Colorless} Waterfall Evolution
Search your deck for a card that evolves from this Pokémon and put it onto this Pokémon to evolve it. Then, shuffle your deck.

Weakness {Lightning} ×2

Retreat {Colorless}

Burning Shadows

{Water} Splashing Dodge 10
Flip a coin. If heads, prevent all effects of attacks, including damage, done to this Pokémon during your opponent’s next turn.

Weakness {Lightning} ×2

Retreat {Colorless}

SM Black Star Promos

Evolutions

{Water} Flail 10×
This attack does 10 damage times the number of damage counters on this Pokémon.

Weakness {Lightning} ×2

Retreat {Colorless}

Macdonald's Collection 2016

 Epic Splash 30
Flip 2 coins. If either of them is tails, this attack does nothing.

Generations

{Water} Epic Splash 30
Flip 2 coins. If either of them is tails, this attack does nothing.

Weakness {Lightning} ×2

Retreat {Colorless}

Ancient Origins

Legendary Treasures

{Colorless} Flailing Flop 10
Flip a coin. If tails, this Pokémon does 10 damage to itself.

Weakness {Lightning} ×2

Retreat {Colorless}

XY Black Star Promos

Dragons Exalted

{Water} Soggy Rush 10
Flip a coin until you get tails. This attack does 10 damage times the number of heads.

Weakness {Lightning} ×2

Retreat {Colorless}

Call of Legends

{Colorless} Splash 10

Weakness {Lightning} x2

Retreat {Colorless}

HS trainer Kit (Gyarados)

HeartGold SoulSilver

Supreme Victors

{Colorless} Flail Around 10x
Flip 3 coins. This attack does 10 damage times the number of heads.

Weakness {Lightning} +10

Retreat {Colorless}

Stormfront

 Sea Spray
Flip a coin until you get tails. For each heads, draw a card.
{Water} Splash 10

Weakness {Lightning} +10

Retreat {Colorless}

Mysterious Treasures

{Colorless} Flail 10x
Does 10 damage times the number of damage counters on Magikarp.
{Water}{Water} Dragon Rage 60
Flip 2 coins. If either of them is tails, this attack does nothing.

Weakness {Lightning} +10

Retreat {Colorless}

Holon Phantoms

{Metal} Splash 10

Weakness {Lightning} ×2

Retreat {Colorless}

Magikarp δ

Deoxys

{Colorless} Leap Out
Switch Magikarp with 1 of your Benched Pokémon.
{Water}{Colorless} Rage 10+
Does 10 damage plus 10 more damage for each damage counter on Magikarp.

Weakness {Lightning} ×2

Retreat {Colorless}

Team Rocket Returns

{Water} Call for Friends
Search your deck for up to 2 Basic Pokémon and put them onto your Bench. Shuffle your deck afterward.

Weakness {Lightning} ×2

Retreat {Colorless}

FireRed & LeafGreen

{Colorless} Surprise Attack 10
Flip a coin. If tails, this attack does nothing.
{Water}{Colorless} Ascension
Search your deck for a card that evolves from Magikarp and put it on Magikarp. (This counts as evolving Magikarp.) Shuffle your deck afterward.

Weakness {Lightning} ×2

Retreat {Colorless}

Dragon

{Colorless} Call for Family
Search your deck for Magikarp and put as many of them as you like onto your Bench. Shuffle your deck afterward.
{Water}{Colorless} Tackle 20

Weakness {Lightning} x2

Retreat {Colorless}

Skyridge

{Colorless} Signs of Evolution
Flip a coin. If heads, search your deck for a card that evolves from Magikarp, show it to your opponent, and put it into your hand. Shuffle your deck afterward.
{Water} Splash 10

Weakness {Lightning} x2

Retreat {Colorless}

Expedition Base Set

{Colorless} Flail 10×
This attack does 10 damage times the number of damage counters on Magikarp.

Weakness {Lightning} x2

Retreat {Colorless}

Legendary Collection

{Colorless} Tackle 10
{Water} Flail 10×
Does 10 damage times the number of damage counters on Magikarp.

Weakness {Lightning} ×2

Retreat {Colorless}

Neo Revelation

{Water} Gold Scale
Your opponent may draw 2 cards. Either way, you may draw 2 cards.
{Psychic} Dragon Bond
Search your deck for a card named Gyarados, Dark Gyarados, or Shining Gyarados. Show it to your opponent and put it into your hand. Shuffle your deck afterward.

Weakness {Lightning} ×2

Retreat {Colorless}

Gym Challenge

{Water} Ancestral Memory
Flip a coin. If tails, this attack does nothing. Either way, you can't use this attack again as long as Giovanni's Magikarp stays in play (even putting Giovanni's Magikarp on the Bench won't let you use it again).
{Water}{Colorless} Flail Around 10x
Flip 3 coins. This attack does 10 damage times the number of heads.

Weakness {Lightning} x2

Retreat {Colorless}

Giovanni's Magikarp

{Colorless} Play Dead
Flip a coin. If heads, during your opponent's next turn, prevent all effects of attacks, including damage, done to Misty's Magikarp.
{Colorless} Leap 10

Weakness {Lightning} x2

Retreat {Colorless}

Team Rocket

{Colorless} Flop 10
{Water}{Water}{Water} Rapid Evolution
Search your deck for an Evolution card named Gyarados or Dark Gyarados and put it on Magikarp. (This counts as evolving Magikarp.) Shuffle your deck afterward.

Weakness {Lightning} ×2

Retreat {Colorless}

Base Set 2

{Colorless} Tackle 10
{Water} Flail 10
Does 10 damage times number of damage counters on Magikarp.

Weakness {Lightning} ×2

Retreat {Colorless}

Base Set

{Colorless} Tackle 10
{Water} Flail 10x
Does 10 damage times number of damage counters on Magikarp.

Weakness {Lightning} ×2

Retreat {Colorless}