CardsBuild your DeckBest decksLearn
Sign in
20cards

A fan-made companion for Pokémon TCG Pocket: browse cards, build decks, track the meta, plan your collection.

Site

  • About
  • Contact
  • Tools

Legal

  • Privacy Policy
  • Cookie Policy

Happy drafting.

© 2026 20cards. This site is not affiliated with, endorsed, or sponsored by The Pokémon Company, Nintendo, Creatures Inc., or GAME FREAK Inc. Pokémon and all related names, images, and assets are trademarks of their respective owners.

Card images are served from our own image CDN, mirrored from a public fan-maintained archive. Tournament data is sourced from community aggregators.

  1. Home
  2. /Best Decks
  3. /Mega Blastoise ex Deck

Mega Blastoise ex Deck

0.1% of the meta · Updated July 25, 2026

Tier 3
Build this deck→
Mega Blastoise ex

Signature card

Mega Blastoise ex

Special Art Rare

31.2% win rate0.1% meta share1 core cards

Strengths

  • Triple Bombardment with 3 extra water energy spreads 50 damage to two benched Pokemon in a single turn, threatening KOs on multiple targets.
  • 230 HP makes Mega Blastoise ex extremely difficult to 1HKO without specific high-damage attackers, giving it natural staying power.
  • Misty can attach multiple water energy in one turn, potentially shortcutting the energy loading timeline by several turns.

Weaknesses

  • Mega Blastoise ex is a Mega ex — a KO scores the opponent 3 points, which is an instant loss. The opponent wins the game immediately if Mega Blastoise ex is knocked out.Mega KO = lose
  • Full spread mode requires 6 total water energy attached; achieving this takes multiple turns and is vulnerable to energy disruption.Deckbuilding
  • Retreat cost of 3 means Mega Blastoise ex is nearly impossible to retreat once active without Big Air Balloon or similar support.Deckbuilding
  • Lunala ex, Annihilape, and Mega Scizor ex are strongly unfavorable matchups that can KO Mega Blastoise ex before it reaches full energy.Matchup

Top Tournament Deck Lists

#18 — Godi

Lagoon Serenity Format (5 USD) · 4W-2L

Energies
W
20 cards

Pokemon (7)

Eiscue

Eiscue

Mantyke

Mantyke

2
Mega Blastoise ex

Mega Blastoise ex

2
Squirtle

Squirtle

Wartortle

Wartortle

Trainers (13)

Copycat

Copycat

2
Cyrus

Cyrus

Heavy Helmet

Heavy Helmet

Inflatable Boat

Inflatable Boat

Irida

Irida

Misty

Misty

Poké Ball

Poké Ball

2
Professor’s Research

Professor’s Research

2
Rare Candy

Rare Candy

2

#13 — Cyberpato

Lagoon Serenity Format (10 USD Prize) · 4W-3L

Energies
W
20 cards

Pokemon (8)

Mega Blastoise ex

Mega Blastoise ex

2
Squirtle

Squirtle

2
Wailmer

Wailmer

2
Wailord

Wailord

2

Trainers (12)

Copycat

Copycat

2
Cyrus

Cyrus

Misty

Misty

Parasol Lady

Parasol Lady

Poké Ball

Poké Ball

2
Professor’s Research

Professor’s Research

2
Protective Poncho

Protective Poncho

Rare Candy

Rare Candy

2

#10 — 𝗕𝗢𝗔𝗧 | Pocket

Lagoon Serenity Format (OAK FA) · 3W-2L-1T

Energies
W
20 cards

Pokemon (7)

Manaphy

Manaphy

Mantyke

Mantyke

2
Mega Blastoise ex

Mega Blastoise ex

2
Squirtle

Squirtle

2

Trainers (13)

Big Air Balloon

Big Air Balloon

Copycat

Copycat

2
Cyrus

Cyrus

Irida

Irida

Misty

Misty

2
Poké Ball

Poké Ball

2
Professor’s Research

Professor’s Research

2
Rare Candy

Rare Candy

2
Est. 301 packs to collect all core cardsdetails
Mega Blastoise exDouble Rare
301 pks

Core Cards

Mega Blastoise ex

Mega Blastoise ex

Crimson Blaze #020

Key Moves & Abilities

Triple Bombardment(Mega Blastoise ex)
130

If this Pokémon has at least 3 extra {W} Energy attached, this attack also does 50 damage to 2 of your opponent's Benched Pokémon.

Strategy Guide

Auto-generated

Mega Blastoise ex is a Stage 2 Mega ex water attacker that delivers 130 main damage plus 50 damage to two benched Pokemon when loaded with at least 3 extra water energy. The win condition is assembling heavy energy on Mega Blastoise ex and wiping out multiple damaged Pokemon simultaneously — one KO scores 3 points and wins immediately.

Find Squirtle with Poke Ball and begin building the Blastoise line while benching Mantyke and Manaphy for support. Rare Candy allows skipping Wartortle to land Mega Blastoise ex faster. Misty can attach multiple water energy in a single turn to accelerate the energy requirement. Once Mega Blastoise ex has at least 3 extra water energy beyond the base cost, Triple Bombardment hits the active for 130 and spreads 50 damage to two benched Pokemon simultaneously. Cyrus and Irida provide strategic support to keep momentum or pull in key targets.

Damage Math

Triple Bombardment base output

130 to active Pokemon

Requires Water, Water, Colorless — baseline before extra energy condition

Triple Bombardment with 3+ extra water energy

130 to active + 50 to 2 benched Pokemon = 230 total damage distributed

Full spread mode; requires 6 total energy attached (3 base + 3 extra)

How to Play

Load energy quickly with Misty and Rare Candy

Mega Blastoise ex needs significant energy to activate the bench spread. Use Rare Candy to skip Wartortle and deploy Mega Blastoise ex early, then use Misty to attach multiple water energy in one turn. The faster you load energy, the sooner Triple Bombardment reaches its full 130 + 50 + 50 spread output.

Key cardsMega Blastoise exMistyRare CandySquirtle

Target benched Pokemon to maximize spread KOs

Triple Bombardment's 50 bench damage punishes decks that rely on low-HP evolution basics or support Pokemon sitting on the bench. Chip 50 damage onto benched targets each turn, then use Sabrina to pull a weakened benched Pokemon into the active spot for a finishing hit. Mantyke and Manaphy on your bench absorb spread damage from opponents.

Key cardsMega Blastoise exMantykeManaphyIrida

How to Beat This Deck

Score the 3-point KO on Mega Blastoise ex to win instantly

Mega Blastoise ex is a Mega ex — knocking it out awards 3 points, which immediately wins the game. Decks running high-damage attackers should prioritize landing this KO above all else. At 230 HP it requires significant setup, but any deck that can deal 230 or more damage across two turns against it can win in one exchange.

CountersCyrusSabrina

Deny energy accumulation before the spread activates

Triple Bombardment's bench damage only activates with 3 extra water energy attached — 6 total. Disrupting energy attachment turns or forcing Mega Blastoise ex to attack before full energy load reduces output to 130 damage with no spread. Energy denial tools or forced switching with Cyrus strip the threat of multi-target damage entirely.

CountersCyrus

Spread your own bench to minimize spread KO opportunities

Triple Bombardment targets 2 benched Pokemon for 50 damage. Running benched Pokemon with higher HP makes each spread hit less threatening. Bench only Pokemon that can absorb a 50-damage hit without entering KO range, and avoid benching low-HP basics when Mega Blastoise ex is active and energy-loaded.

CountersProtective Poncho

Common Substitutions

Bench HP buffer

  • Mantyke:52% of lists; provides a small body on the bench to absorb spread damage from the opponent's spread attackers.
  • Manaphy:20% of lists; bench support role with HP to absorb incidental damage while Mega Blastoise ex loads energy.

Energy acceleration

  • Misty:56% of lists; attaches multiple water energy in one turn — the fastest way to reach the 3 extra energy threshold.
  • Irida:24% of lists; provides water-type support to accelerate energy or search for specific pieces.

Evolution bridge

  • Wartortle:44% of lists as an alternative to Rare Candy; provides a natural evolution path if Rare Candy is not drawn in time.

Matchups

Threats — Weak Against

Mega Manectric ex Deck

lightning · 44% WR

T2

Miraidon ex Deck

lightning · 44% WR

T2

Bellibolt ex Deck

lightning · 46% WR

T2

Magnezone ex Deck

lightning · 44% WR

T3

Jolteon ex Deck

lightning · 45% WR

T3

Magnezone Deck

lightning · 48% WR

T3

Favorable — Strong Against

Mega Blaziken ex Deck

fire · 41% WR

T2

Entei ex Deck

fire · 43% WR

T2

Chandelure Deck

psychic, fire · 49% WR

T3

Charizard ex Deck

fire · 45% WR

T3

Armarouge ex Deck

fire · 44% WR

T3

Mega Charizard X ex Deck

fire · 33% WR

T3

Based on type weakness analysis of core cards. View full matchup matrix →

Pokemon in this Deck

Mega Blastoise