Mega Altaria ex Deck
6.8% of the meta · Updated September 4, 2026
Signature card
Mega Altaria ex
Immersive
Strengths
- A KO against an opposing Mega ex scores 3 points — an instant win; KOs on ex targets score 2 points each.3 points from one KO of an opposing Mega = instant win
- 130 damage ceiling one-shots a wide range of Pokemon in the format with a full bench of 3.
- Retreat cost of 1 makes Mega Altaria ex easy to pivot out and back in, enabling flexible sequencing with Sabrina and Cyrus.
Weaknesses
- Losing Mega Altaria ex to the opponent's KO ends the game instantly with 3 points — the opponent wins immediately.Mega KO = lose
- Bench-dependent damage means disruption that shrinks your bench directly cuts Mega Harmony's output.Deckbuilding
- Lanturn ex at 33% and Victreebel at 45% show exploitable type and structural vulnerabilities.Matchup
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Est. 301 packs to collect all core cardsdetails
Core Cards
Key Moves & Abilities
Strategy Guide
Auto-generatedMega Altaria ex wins by filling the bench with low-cost Psychic Pokemon and firing Mega Harmony for up to 130 damage. The deck prioritizes bench density over raw single attacker power, scoring 2 points on ex KOs or 3 points — ending the game instantly — only if the target is an opposing Mega ex.
Open by searching Swablu with Poké Ball and populating the bench with flex Pokemon such as Igglybuff, Darkrai, Eevee, or Chingling. By mid-game, evolve Swablu into Mega Altaria ex through natural draw via Professor's Research, Copycat, and Lisia. With three Benched Pokemon, Mega Harmony deals 40 + 90 = 130 damage — the maximum the bench allows. Close out by presenting Mega Altaria ex as the active attacker and swinging for that ceiling, scoring 2 points on each ex KO and building toward the 3-point win threshold.
Damage Math
Any active Pokemon with 3 benched Pokemon
base 40 + 3x30 = 130
Mega Harmony at full 3-bench cap — the maximum possible bench in Pocket
How to Play
Maximize Bench Density Before Attacking
Every extra benched Pokemon adds 30 damage to Mega Harmony, capping at 3 benched for 130 total. Use your early turns to place Igglybuff, Darkrai, Eevee, Espeon, or Chingling on the bench. Poké Ball finds Swablu; natural draw from Professor's Research and Copycat assembles Mega Altaria ex. Attack only when the bench is full enough to KO your target.
Use Sabrina and Cyrus to Control the Target
After attacking, you may need to switch Mega Altaria ex to the bench to avoid an opposing KO. With retreat cost 1, switching is cheap. Sabrina sends the opponent's current Active Pokemon to their bench (they pick the replacement), clearing out a dangerous attacker. Cyrus forces a damaged opposing bench Pokemon into the Active Spot, letting you finish it off for points.
How to Beat This Deck
Remove Bench Pokemon to Shrink Damage
Every Pokemon removed from the Mega Altaria ex bench costs 30 damage per Mega Harmony. Strategies that force bench Pokemon to be discarded or prevent bench extension cut the damage ceiling significantly. Reducing the bench to one or fewer Pokemon drops Mega Harmony to 70 damage or less, low enough to survive with healing.
Race to 3 Points Before Mega Evolves
Mega Altaria ex requires Swablu plus evolution time. Aggressive fast decks that score 1 point off a Swablu KO and then pressure the bench early can build a point lead before Mega Harmony fires. The deck has no way to attack while still in the Swablu stage.
Exploit Type Weaknesses in the Flex Slots
The bench-filling flex Pokemon — Igglybuff, Darkrai, Eevee, Espeon — introduce varied types with their own weaknesses. Playing into those weaknesses while avoiding Mega Altaria ex lets you farm 1-point KOs and accumulate scoring leads without ever facing 130-damage Mega Harmony.
Common Substitutions
Bench-filling psychic support
- Igglybuff:62.4% inclusion; easy to place early and costs little resource investment
- Darkrai:63.8% inclusion; doubles as a secondary attacker option while filling the bench
- Espeon:44.4% inclusion alongside Eevee; provides a Stage 1 bench anchor with secondary utility
Matchups
Threats — Weak Against
Based on type weakness analysis of core cards. View full matchup matrix →