Pokemon TCG Pocket (PTCGP)

Best Mega Gyarados ex Decks and Card List

Pokemon TCG Pocket (PTCGP) Walkthrough Team

Last updated on: December 17, 2025 06:05 AM

Pokemon TGC Pocket - Mega Gyarados ex Best Deck Build and How to Play

This guide will show you how to build some of the strongest Mega Gyarados ex Decks. We'll cover the best Mega Gyarados ex Deck builds, how to use them, as well how to beat Mega Gyarados ex Decks, and more!

The decks on this page reflect the meta around the Mega Rising Expansion.

List of Contents

Best Mega Gyarados ex Decks
Mega Gyarados ex Deck Strategy Guide
How to Beat Mega Gyarados ex Decks
Related Guides

Best Mega Gyarados ex Decks

Mega Gyarados ex Deck Variants	Strengths and Weaknesses
Mega Gyarados ex and Milotic [★ Best ★]	Strengths: • Mega Blaster can work as a win condition that discards your opponent's deck, effectively limiting their options. • Mega Blaster does a solid 140 damage, enabling Mega Gyarados ex to 2HKO ex Pokemon. • Milotic can keep Mega Gyarados ex healthy, and is a decent enough countermeasure to Pom-Pom Oricorio. Weaknesses: • Magikarp and Feebas can get KO'd easily due to their low HP.
Mega Gyarados ex Deck [★ New ★]	Strengths: • Mega Blaster can work as a win condition that discards your opponent's deck, effectively limiting their options. • Mega Blaster does a solid 140 damage, enabling Mega Gyarados ex to 2HKO ex Pokemon. • Water Pokemon have access to a multitude of ways to accelerate Energy. Weaknesses: • Very weak to Pom-Pom Oricorio, which it cannot damage.

Mega Gyarados ex Deck Variants

Strengths and Weaknesses

Mega Gyarados ex and Milotic
[★ Best ★]

Strengths:
• Mega Blaster can work as a win condition that discards your opponent's deck, effectively limiting their options.
• Mega Blaster does a solid 140 damage, enabling Mega Gyarados ex to 2HKO ex Pokemon.
• Milotic can keep Mega Gyarados ex healthy, and is a decent enough countermeasure to Pom-Pom Oricorio.

Weaknesses:
• Magikarp and Feebas can get KO'd easily due to their low HP.

Mega Gyarados ex Deck
[★ New ★]

Strengths:
• Mega Blaster can work as a win condition that discards your opponent's deck, effectively limiting their options.
• Mega Blaster does a solid 140 damage, enabling Mega Gyarados ex to 2HKO ex Pokemon.
• Water Pokemon have access to a multitude of ways to accelerate Energy.

Weaknesses:
• Very weak to Pom-Pom Oricorio, which it cannot damage.

Mega Gyarados ex and Milotic Deck

Magikarp ×2	Feebas ×2	Milotic ×2	Mantyke ×2
Mega Gyarados ex ×2	Giovanni ×1	Heavy Helmet ×1	May ×1
Lisia ×2	X Speed ×1	Poke Ball ×1	Red Card ×1
Professor's Research ×2
Energy Used

Use Lisia to quickly find your Magikarp, Mantyke and Feebas. Once benched, it then becomes a matter of evolving your Pokemon as quickly as possible.

Once Magikarp has evolved into Mega Gyarados ex, use Mega Blaster every turn. Evolve Feebas into Milotic to heal 60 damage from Mega Gyarados ex using Healing Ripples.

Heavy Helmet is also an effective way of mitigating damage to Mega Gyarados ex.

Expansions	Cards to Get and Packs to Open
Genetic Apex (A1)	Giovanni x 1 (Mewtwo Pack)
Mythical Island (A1a)	No cards needed from this expansion.
Spacetime Smackdown (A2)	No cards needed from this expansion.
Triumphant Light (A2a)	No cards needed from this expansion.
Shining Revelry (A2b)	No cards needed from this expansion.
Celestial Guardians	No cards needed from this expansion.
Extradimensional Crisis	No cards needed from this expansion.
Eevee Grove	No cards needed from this expansion.
Wisdom of Sky and Sea	Magikarp x 2 (Lugia Pack)
Secluded Springs	Feebas x 2 (Suicune Pack) Milotic x 2 (Suicune Pack) Mantyke x 2 (Suicune Pack)
Mega Rising	Mega Gyarados ex x 2 (Mega Gyarados Pack) Heavy Helmet x 1 (Mega Gyarados Pack) May x 1 (Mega Blaziken Pack) Lisia x 2 (Mega Altaria Pack)
Crimson Blaze	No cards needed from this expansion.
Promo-A	X Speed x 1 (Promo-A Pack) Poke Ball x 1 (Promo-A Pack) Red Card x 1 (Promo-A Pack) Professor's Research x 2 (Promo-A Pack)

Mega Gyarados ex Deck

Magikarp ×1	Mantyke ×2	Magikarp ×1	Gyarados ×1
Mega Gyarados ex ×2	Misty ×2	Sabrina ×2	Giant Cape ×1
Mars ×1	Inflatable Boat ×1	Lisia ×2	Poke Ball ×2
Professor's Research ×2
Energy Used

Use Lisia to quickly find your Basic Pokemon. Once benched, use Misty and Mantyke's Splashy Toss to accelerate Energy onto Magikarp.

Evolve Magikarp into Mega Gyarados ex and use Mega Blaster every turn.

Expansions	Cards to Get and Packs to Open
Genetic Apex (A1)	Misty x 2 (Pikachu Pack) Sabrina x 2 (Charizard Pack)
Mythical Island (A1a)	Magikarp x 1 (Mew Pack)
Spacetime Smackdown (A2)	Giant Cape x 1 (Dialga Pack) Mars x 1 (Palkia Pack)
Triumphant Light (A2a)	No cards needed from this expansion.
Shining Revelry (A2b)	No cards needed from this expansion.
Celestial Guardians	No cards needed from this expansion.
Extradimensional Crisis	No cards needed from this expansion.
Eevee Grove	No cards needed from this expansion.
Wisdom of Sky and Sea	No cards needed from this expansion.
Secluded Springs	Mantyke x 2 (Suicune Pack) Inflatable Boat x 1 (Suicune Pack)
Mega Rising	Magikarp x 1 (Mega Gyarados Pack) Gyarados x 1 (Mega Gyarados Pack) Mega Gyarados ex x 2 (Mega Gyarados Pack) Lisia x 2 (Mega Altaria Pack)
Crimson Blaze	No cards needed from this expansion.
Promo-A	Poke Ball x 2 (Promo-A Pack) Professor's Research x 2 (Promo-A Pack)

Mega Gyarados ex Deck Strategy Guide

Mega Gyarados ex Offense

Once Mega Gyarados ex is set up, you would ideally keep it in the Active Spot and keep attacking with it until you've scored three points.

Mega Blaster can also run your opponents out of options because of its added effect of discarding the top cards from your opponent's deck.

Set Up with Lisia

Lisia can efficiently find our Mantyke and Magikarp from the deck, allowing you a quick setup compared to only relying on Poke Balls and Professor's Research.

Accelerate Energy with Misty and Mantyke

Mega Gyarados ex's Mega Blaster has a steep 4 Attack Cost. To achieve this, we run both Misty and Mantyke, which will help us set up Mega Gyarados ex as quickly as possible.

Use Non-ex Gyarados Against Pom-Pom Oricorio

A single copy of Gyarados from B1 is slotted into the deck as a countermeasure to Pom-Pom Oricorio. Consider setting one up quickly if you're up against a Lightning deck.

How to Beat Mega Gyarados ex Decks

Quickly KO Low HP Pokemon

Mantyke and Magikarp both have low HP, and can easily get KOd by a quick and efficient attacker like Hitmonchan ex.

Jirachi is a great way to KO Magikarp as soon as they get played on the Bench.

Bad Misty Flips

Mega Gyarados ex decks, like other Misty decks, run the chance of flipping poorly on Misty turns. While lucky heads flips can often mean a large momentum swing in our favor, an unlucky tails flip means an unproductive supporter was used for our turn.

While we do play Misty, it is important to be mindful of our Energy attachments and aim to have productive turns.

Pokemon TCG Pocket Related Guides

Decks

Best Meta Decks Tier List

Crimson Blaze Decks

CB Magnezone	Mega Lopunny ex	Mega Charizard Y ex	Mega Venusaur ex
CB Heliolisk	Ariados	CB Ditto	Mega Blastoise ex
Mega Steelix ex	Reuniclus	-	-

Top Decks in the Meta

Tier
Mega Absol ex and Hydreigon Deck	Greninja ex and Suicune ex Deck	CB Magnezone and Pom-Pom Oricorio Deck	CB Magnezone and Darkrai ex Deck
Tier
Mega Altaria ex and Greninja Deck	Mega Lopunny ex and CB Magnezone Deck	Mega Altaria ex and Furfou Deck	Decidueye ex Deck
Tier
Mega Absol ex and Greninja Deck	Mega Lopunny ex and Lucario Deck	Jolteon ex and Jolteon Deck	Mega Charizard Y ex and Entei ex Deck	Ariados and Whimsicott ex
Mega Blaziken ex and Heatmor Deck	-	-	-
Tier
Mega Venusaur ex Deck	CB Heliolisk and CB Magnezone Deck	Ditto and Rampardos Deck	Hitmonchan ex and Lucario Deck	-
Tier
Mega Blastoise ex and Manaphy Deck	Mega Steelix ex Deck	Reuniclus and Chingling Deck	-
Tier
Mega Venusaur ex and Leafeon ex Deck	Reuniclus and Gardevoir Deck	-	-

List of All Decks

Core Expansion	Decks
(B1a)	・Ariados ・CB Ditto ・CB Heliolisk ・CB Magnezone ・Mega Blastoise ex ・Mega Charizard Y ex ・Mega Lopunny ex ・Mega Steelix ex ・Mega Venusaur ex ・Reuniclus
(B1)	・Aegislash ・Dragalge ex ・Greninja ex ・Golurk ・Goodra ・Hitmonchan ex ・Hydreigon ・Indeedee ex ・Jolteon ex ・Luxray ・Mega Absol ex ・Mega Altaria ex ・Mega Ampharos ex ・Mega Blaziken ex ・Mega Gyarados ex ・Mega Pidgeot ex ・Mega Pinsir ex ・Melmetal ex ・Rapidash ex ・Tauros ex ・Whimsicott ex
(A4a)	・Altaria ・Celebi ・Dugtrio ・Entei ex ・Galarian Cursola ・Jumpluff ex ・Latios ・Miltank ・Poliwrath ex ・Raikou ex ・Slowking ・SS Eelektross ・Suicune ex ・Zoroark
(A4)	・Crobat ex ・Donphan ex ・Espeon ex ・Ho-oh ex ・Kingdra ex ・Lanturn ex ・Lugia ex ・Magcargo ・Raikou ・Scizor ・Shuckle ex ・Skarmory ex ・Steelix ・Umbreon ex ・WSS Gyarados ・WSS Tyranitar ・Xatu
(A3b)	・Alcremie ・Dragonite ex ・Espeon ・Flareon ex ・Glaceon ・Jolteon ・Leafeon ・Primarina ex ・Slurpuff ・Snorlax ex ・Sylveon ex ・Umbreon ・Vaporeon
(A3a)	・Alolan Dugtrio ex ・Blacephalon ・Buzzwole ex ・Guzzlord ex ・Lycanroc ex ・Naganadel ・Nihilego ・Pheromosa ・Shiinotic ・Silvally ・Stoutland ・Tapu Koko ex ・Ultra Necrozma ex
(A3)	・Alolan Muk ex ・Alolan Ninetales ・Alolan Raichu ex ・Araquanid ・Banette ・Crabominable ex ・Decidueye ex ・Dhelmise ex ・Incineroar ex ・Kommo-o ・Lunala ex ・Mimikyu ・Passimian ex ・Pom-Pom Oricorio ・Rayquaza ex ・Solgaleo ex ・Tsareena ・Turtonator ・Vikavolt ・Wishiwashi ex
(A2b)	・Beedrill ex ・Bibarel ex ・Dondozo ・Gholdengo ・Giratina ex ・Lucario ex ・Meowscarada ・Paldean Clodsire ex ・Pawmot ・SR Charizard ex ・SR Pikachu ex ・Tinkaton ex ・Wugtrio ex
(A2a)	・Abomasnow ・Arceus ex ・Bronzong ・Carnivine ・Crobat ・Donphan ・Garchomp ex ・Gengar ・Glaceon ex ・Heatran ・Houndoom ・Leafeon ex ・Origin Forme Palkia ・Probopass ex ・Snorlax ・Staraptor ・TL Tyranitar
(A2)	・Bastiodon ・Darkrai ex ・Dialga ex ・Empoleon ・Gallade ex ・Garchomp ・Infernape ex ・Lickilicky ex ・Lucario ・Luxray ・Magnezone ・Mesprit ・Mismagius ex ・Pachirisu ex ・Palkia ex ・Porygon-Z ・Rampardos ・Rhyperior ・Togekiss ・Torterra ・Weavile ex ・Yanmega ex
(A1a)	・Aerodactyl ex ・Celebi ex ・Golem ・Gyarados ex ・Mew ex ・Pidgeot ex ・Scolipede
(A1)	・Aerodactyl ・Alakazam ・Arbok ・Arcanine ex ・Articuno ・Articuno ex ・Blastoise ・Blastoise ex ・Centiskorch ・Charizard ・Dragonite ・Exeggutor ex ・Frosmoth ・GA Charizard ex ・GA Gyarados ・GA Pikachu ex ・Gengar ex ・Greninja ・Kabutops ・Kingler ・Lapras ex ・Machamp ex ・Marowak ex ・Melmetal ・Mewtwo ex ・Moltres ex ・Ninetales ・Omastar ・Pidgeot ・Poliwrath ・Primeape ・Raichu ・Starmie ex ・Venusaur ・Venusaur ex ・Weezing ・Wigglytuff ex ・Zapdos ・Zapdos ex

Best Rental Deck Tier List

Deck-Building Guides and Lists

Lists of Decks by Type
Best F2P Beginner Decks	Best Non-ex Decks
Which ex Starter Deck Should You Get?	List of Rental Decks
Best 18 Trainers Decks	Best Trainerless Decks for Solo Battle Missions
List of Meme or Troll Decks	List of Ultra Beast Decks
Best Eeveelution Decks	Best Baby Pokemon Decks
Deck-Building Guides
Deck Building Guide	How Rental Decks Work
Staple Cards for Decks	-
Deck Analyses
Deck Matchup Statistics	10 Match Tests vs Pikachu ex Deck - Statistics

Comment

Anonymous about 2 months

Gyarados with Mantine is so much better than Milotic. Why waste 4 slots that only slow your engine for 60 hp of healing, when you can just use Perula and the heavy helmet

Post (1 Comments)

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Best Mega Gyarados ex Decks and Card List

Best Mega Gyarados ex Decks

Mega Gyarados ex and Milotic Deck

Mega Gyarados ex Deck

Mega Gyarados ex Deck Strategy Guide

Mega Gyarados ex Offense

Set Up with Lisia

Accelerate Energy with Misty and Mantyke

Use Non-ex Gyarados Against Pom-Pom Oricorio

How to Beat Mega Gyarados ex Decks

Quickly KO Low HP Pokemon

Bad Misty Flips

Pokemon TCG Pocket Related Guides

Crimson Blaze Decks

Top Decks in the Meta

List of All Decks

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