The “Mega Harmony” attack of Mega Altaria ex is 40 damage +30 for each Pokemon on your Bench (to a maximum of 130 damage with 3 Pokemon on your Bench) for only 2 Energy. This efficiency is exactly why has always been a Tier 1 deck in the current meta and has made up roughly 11.5 % of the tracked decks since late July 2026.
The strongest build on the,former,wields Mega Altaria expacked into Darkrai, Igglybuff and Espeon. The trio all put the foe‘s Active to Sleep, giving turns to Mega Altaria ex to deck out its Bench before it can hit and Darkrai‘s Bad Dreams can chip in, subtracting free damage every sleeping turn.
Includes that build in its entirety, Plus the Greninja/Gourgeist variants that appear in guide overviews and tournament sets, a detailed guide on playing it turn-by-turn, real strengths and weaknesses, and the lists built to counter it.
Table of Contents
Best Mega Altaria ex Deck
Mega Altaria ex Deck List
| Card | Quantity | Type | Role |
|---|---|---|---|
| Swablu | 2 | Pokemon | Evolves into Mega Altaria ex |
| Mega Altaria ex | 2 | Pokemon | Main attacker |
| Eevee | 2 | Pokemon | Evolves into Espeon |
| Espeon (Paradox Drive) | 2 | Pokemon | Turn-1 Sleep enabler |
| Darkrai | 1 | Pokemon | Bad Dreams — passive damage on Sleep |
| Igglybuff | 1 | Pokemon | Sleepy Lullaby — Sleep without Energy |
| Chingling | 1 | Pokemon | Jingly Noise — locks opponent’s Items |
| Professor’s Research | 2 | Trainer | Hand refill |
| Poké Ball | 2 | Trainer | Fetches Swablu or other Basics |
| Copycat | 2 | Trainer | Card advantage, matches opponent’s hand size |
| Lisia | 1 | Trainer | Fetches low-HP Basics, fills Bench |
| Sabrina | 1 | Trainer | Switches opponent’s Active Pokemon |
| Cyrus | 1 | Trainer | Pulls damaged Pokemon into the Active spot |
That‘s 11 Pokemon and 9 Trainers 20 cards altogether. All of the Energy is from the Psychic Energy Zone, because Mega Altaria ex is using all Psychic-type attack costs, despite it‘s Fairy type in the wider game.
Why This Is the Best Mega Altaria ex Deck
Main Win Condition
Get Mega Altaria ex‘s Bench to 3 Pokemon, then clear the way to make it so he hits for the full 130 damage. All other parts of the deck aid in maintaining that window.
Why Mega Altaria ex Is the Main Attacker
No other card in the deck can match its damage/Energy rate. Two Energy to deal up to 130 damage is a very cost-effective rate, and knocking out an opposing ex or Mega is goal-counting good.
Why the Supporting Pokemon Are Included
Igglybuff gets Sleep from turn one without Energy. Espeon (Paradox Drive) can also get Sleep from turn one, if it is evolved, by discarding the requisite card. If it is, Darkrai‘s Bad Dreams makes that Sleep into free damage, chips away at your opponent every turn they are Asleep. Chingling‘s Jingly Noise prevents your opponent from drawing Item cards, while your setup progresses.
How the Deck Creates Its Damage
It‘s a layered stall. Sleep effects are used to deny the opponent turns, Darkrai then converts the denied turns into damage, and Mega Altaria ex completes the ex coverage once the Bench is full enough to be relevant.
What Makes This Build Different
Most Mega Altaria ex lists include one enabler. This one combines three distinct Sleep induced moves so that just defeating one of them (a Sabrina flip, a Stage exception) doesn‘t ruin the entire strategy.
Key Cards in the Deck
Mega Altaria ex is the finisher it‘s everything else only gives you the turns you need. Espeon and Igglybuff are the Sleep engine. Professor‘s Research, Copycat, and Lisia are what get you there reliably; Sabrina and Cyrus are what manipulate the board once you‘re there.
How to Play the Mega Altaria ex Deck
How to Set Up the Deck
Open by searching for Swablu with Poké Ball, and bring a Sleep user (Igglybuff or an evolved Espeon) onto the field as quickly as you can.
Early-Game Strategy
Keep damage to a minimum if possible. Landing Igglybuff‘s Sleepy Lullaby late in the game isn‘t as crucial as being able to land it early, since doing so allows you to accelerate your game plan that much more.
Mid-Game Strategy
When Sleep goes active, use the free turns to fill your Bench with Chingling, Darkrai, or a second Espeon. Each Benched pokemon is 20 damage next turn for Mega Altaria ex.
Late-Game Strategy
Attack with Mega Altaria ex when you have three Pokemon benched. Use Cyrus first for an easy KO if the opponent has a damaged Pokemon that can come active with ease.
How to Build Your Bench
Set aside sequence low-priority pieces. Those two don‘t have to attack, so Bench them early, and hold the Espeon until you need Sleep.
How to Manage Energy
Once your bench is ready for a real attack, attach to Mega Altaria ex. Don‘t spread the Energy around to multiple attackers because it relies on one big swing rather than a bunch of little swings.
When to Attack With Mega Altaria ex
Only when your Bench is 3, although on a non-table game where a slightly smaller hit will win the game.
When to Retreat
Retreat a sleeping or low-HP Attacker instead of letting it take a hit you can‘t respond to but only if you have a safe Bench piece to switch to.
How to Recover After Losing a Pokemon
Don‘t try to make Mega Altaria ex give up too early in order to make up for it. First restore a Sleep lock; that‘s a remade attack anyway.
Common Mistakes to Avoid
The three most common mistakes are: Attacking before the Bench is full, applying Sleep effects without a plan to further them and failing to recall the fact that Sabrina can thus turn the opponent‘s Active Pokemon out of a bad situation.
Mega Altaria ex Turn-by-Turn Example
Turn 1: Use Swablu, Igglybuff if you have it. Distribute Energy on the down strangest Pokemon.
Turn 2: Get the final missing piece using Poké Ball/Professor‘s Research. If Igglybuff is out, Sleep is always on.
Turns 3: You need your board to have an active Swablu (or evolving line toward Mega Altaria ex), one active Sleep source, and at minimum two other Bench Pokémon.
Mid-Game: This is the time to transition to Mega Altaria ex and have three Pokemon on the Bench. Play a Cyrus if there is a damaged Pokemon on the opponent‘s board for an easy KO.
End Game: Hit for 130 damage with a powered up full Bench, preferably trying for a KO on ex or Mega Pokemon since they get you an bonus points.
Best Pokemon to Pair With Mega Altaria ex
Mega Altaria ex + Espeon
Espeon‘s Paradox Drive can hit sleep right at turn 1 if already evolved which is the quickest sleep trigger available in the deck. Strength-Speed Weakness-Depends on drawing Eevee in time to Evolve.
Mega Altaria ex + Darkrai
Darkrai‘s Bad Dreams makes each Sleep turn generate 20 free damage, so it combines rather than conflicts with Igglybuff or Espeon, instead of replacing them. Plus side: turns stall into actual damage. Down side: has no effect unless a source of sleeppreexists.
Mega Altaria ex + Greninja
Another, separately recorded and documented variation. Water Shuriken chips damage everywhere so Mega Altaria ex can just clean up with a KO rather than requiring the full 130-damage swing every time. Pro: less reliant on a fully packed Bench. Con: slower to get there against decks that remove the Greninja.
Mega Altaria ex + Gourgeist
Gourgeist and Mega Altaria ex both safe KO everything that does not resist, so this feels harder to lock down entirely. The usual utility slots for this build are Jirachi and Chingling, used for sniping and disruption rather than as attackers in their own right. Strength is also a double-edged sword here – single-answer removal is hard to pull of, but this setup is slower than the Sleep-lock build.
Best Mega Altaria ex Deck Variations
Mega Altaria ex and Espeon Deck
The main build discussed above Igglybuff, Espeon, and Darkrai sleep-lock with Mega Altaria ex you should probably use in this situation.
Mega Altaria ex and Greninja Deck
Swaps Sleep for a Froakie 4 Greninja line using Lisia to grab low-HP Basics and Chingling‘s Jingly Noise to lock out the enemy Item cards as a new board forms.
Darkrai and Mega Altaria ex Deck
A slightly more disruptive variant of the primary build, which relies more on Darkrai‘s Bad Dreams to do the bulk of the damage, instead of a partial reliance upon attacking with Mega Altaria ex.
Mega Altaria ex and Baby Pokemon Deck
Runs Chingling, Elekid, and Furfrou all obtainable through Lisia all with Furfrou used as a tank to take hits from other Baby Pokémon or trick ex ex Pokémon into the Mega Altaria ex.
Mega Altaria ex Deck Strengths
Potentialfor damage: 130 damage for 2 Energy is among the most damaging attacks for the format.
Consistency: It also includes Pokémon Ball, Professor‘s Investigation, Copycat, and Lisia for five options of fetching the main plays.
Bench scaling: Damage is scaled by size of bench, meaning a completed board is an immediate offense.
Flexibility: The Sleep-lock, Greninja, and Gourgeist checks allows you to pivot around what you‘re playing into without giving up Mega Altaria ex as your primary reward.
Mega Altaria ex Deck Weaknesses
Slow Setup
Mega Altaria ex requires Swablu, time to evolve, and a mature Bench before it can do anything. Speedy decks that can punch through Sleep enablers and knock out Swablu early put you in the hole before you‘re actually able to get underway.
Bench Vulnerability
Because damage scales with Bench size, anything that removes Benched Pokemon just reduces your damage ceiling, rather than costing you a card.
Difficult Matchups
Decks based on Oricorio‘s Safeguard Ability can be a real concern Safeguard completely negates damage from ex Pokemon, meaning Mega Altaria ex is unable to attack at all despite the size of your Bench. Mega Blaziken ex is also a concern, since it is specifically designed to take out large, bulky Mega Pokemon in one hit.
How to Beat Mega Altaria ex Decks
Best Counters
Running any deck with Oricorio for its Safeguard Ability immediatly clears Mega Altaria ex‘s attack (unsafe for it to work) as Safeguard prevents damage from ex Pokemon. Mega Blaziken ex is of course another great backup counter as it was designed to KO Mega Pokemon in one hit before it gets to attack.
How to Disrupt the Bench
Target Benched Pokmon early. As Mega Altaria ex‘s damage relies on number of Benched Pokmon, take out even one before Mega Altaria ex to lower it‘s maximum potential directly.
How to Stop the Setup
Put pressure on Swablu before it evolves the deck lacks attacker at the Swablu stage, by attacking early you can take away the time to set up Sleep effects and Bench pieces it needs.
How to Win the Matchup
Race before the Bench. 3 pokemon or run oricorio to cap the ex damage regardless of how developed your opponent‘s board is.
Best Trainer Cards for Mega Altaria ex
Best Draw cards: Professor‘s research and Copycat provide your hand from a wide spread, as you need a few different cards in your deck (Sleep source, 2-4 baseroos, Mega altaria ex card itself) though not one specific combo card.
Best Search Cards: Poké Ball gets Swablu, fetches to the bench; Lisia gets some low-HP Basics, changes to empty.
Best Switching Cards: Sabrina makes the defending Active Pokemon switch, which is great for distributing your setup or avoiding deadly attacks.
Best Disruption Cards: Cyrus. Bringing a KO-ready opposing Pokemon into the Active spot makes executing the KO that much easier than trying to take down whatever they‘ve left active.
Mega Altaria ex Energy Requirements
Energy Type
Mega Altaria ex has a Psychic energy symbol when it is played, not a Fairy.
Energy Management
Attach to Mega Altaria ex once your Bench has enough to threaten a reasonable attack. The Mega Harmony is only 2 Energy, so there isn‘t really any need to load up more than that in a turn.
When to Attach Energy
Hold Energy till you are a turn or two away from attacking–betwee6n the time you attach early with an underdeveloped Bench you are losing the deck‘s core strength.
Mega Altaria ex Deck Card Replacements
Cards ToSubstitute: You may swap Chingling for another Espeon if you are short on the Baby Pokemon.
Budget Replacements: (Standard Supporters can substitute for Copycat, if you don‘t have it, but at some expense to consistency.)
Differentsupporting Pokemon: Greninja can completely substitute the Darkrai/Igglybuff Sleep package if you would rather play the damage-spread variation.
Cards to Include: When you have enough of a full suite of cards, adding another Chingling (or potentially a second one, assuming you can find room) and/or a dedicated Oricorio tech (to handle the alternate Safeguard matchup) greatly increases consistency.
Mega Altaria ex Matchups
| Matchup | Difficulty | Strategy |
|---|---|---|
| Oricorio-based decks (Safeguard) | Difficult | Race before Safeguard is online, or avoid committing Mega Altaria ex as your main attacker |
| Mega Blaziken ex | Difficult | Keep your Bench pieces safe; a single Blaziken hit can one-shot Mega Altaria ex |
| Mega Altaria ex mirror | Even | Whoever completes their Sleep lock and Bench first usually controls the game |
| Fast aggro decks | Difficult | Apply your own Sleep pressure immediately; there’s little room for a slow start |
Mega Altaria ex vs Oricorio Decks
Safeguard takes out Mega Altaria ex‘s damage altogether, so this match-up relies on if you can KO your opponent before his Oricorio is online.
Mega Altaria ex vs Mega Blaziken ex
Blaziken is designed to the one-shot tanky Megas. Keeping your Bench safe and not attacking too early is more important in this matchup than in any other.
Mega Altaria ex Mirror Match
Anyway, both teams are rushing for the same Sleep-lock option with the common tactic, thus whoever you get that Igglybuff /Espeon put to sleep first generally set the game‘s tempo.
Is Mega Altaria ex Worth Building?
Suitablefor:Existing or playable-with effort Espeon, Darkrai, and basic drawing Supporters players who like a Sleep tempo game (actually a tempo game) rather than an aggressive game.
Who should avoid it: Players facing large numbers of Oricorio or Mega Blaziken ex on their ladder, both of which are tough, well-documented counters.
Problem: Medium The deck hinges on correctly sequencing Sleep effects (sometimes in a chain) more so than the power of individual cards.
Overall conclusion: Yes, it is viable Tier 1 at the moment, just not invincible and it is more relevant to know its ‘counters’ than most other decks.
Mega Altaria ex Deck Tips
Tip 1: Always try to achieve a Sleep effect before turn three it‘s the most important element in how well the deck performs.
Tip 2: Don‘t attack with Mega Altaria ex until your Bench is 3 Pokemon unless it ends the game immediately.
Tip 3: Before you go with Mega Altaria ex as the attacker (Mega Altaria is a very nice attacker), check if the Oricorio‘s on the other guys bench – the attack will be useless even with 3 or 4 Bench.
Tip 4: Use Cyrus to drag hurt Pokemon into your Active spot before attacking instead of attacking whatever the hell the opposition has left up.
Tip 5: Insert Darkrai and Chingling to the bench early they both have no need to attack, thus safe to develop while your Sleep lock is being set up.
Frequently Asked Questions About Mega Altaria ex
What is the strongest Mega Altaria ex deck in Pokemon TCG Pocket?
Darkrai/Espeon/Igglybuff Sleep-lock build has the most tournament support at the moment, about 11.5% of decks tracked are a Tier 1 archetype.
Which Pokemon is the best partnerfor Mega Altaria ex?
Espeon and Igglybuff for Sleep, Darkrai for passive damage on top of that Sleep, and Greninja as an alternative damage-spread partner.
How many Mega Altaria ex should Iplay?
Two copies is typical, which provides uniformity without dominating the Sleep-enabling side of support Pokemon.
Against which is Mega Altaria exweak? (i.e. What types is Mega Altaria – in its ex form – weak against?)
The Oricorio‘s Safeguard Ability prevented it from taking any damage as it is an ex Pokemon and Mega Altaria ex is an ex Pokemon and Mega Blaziken ex is designed to one shot bulky Megas such as it.
How do you get past Mega Altaria ex?
Use Run Oricorio for Safeguard, giver pressure prior to Swablu evolving, or work on Benched Pokemon directly to reduce its damage cap.
Is it worth to build Mega Altaria ex?
Yes, if you have, or are willing to build into, Espeon and Darkrai. It is a Tier 1 deck now, though it is actually a deck with genuine, well-researched, counters so you should be aware of them before you invest in the deck.
Related Pokemon TCG Pocket Guides
- Pokemon TCG Pocket Top rating decks
- Mega Blaziken from ex Deck Guide
- Decidueye ex Deck Guide
- Pokemon TCG Pocket Deluxe Pack EX Card List
The data on the game currently available can be double checked by keeping an eye on the live decklist and meta share of Limitless TCG and Pokemon Zone, both of which are reliable sources to compare to any info in this guide as the format keeps changing.
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