How to beat Mega Zygarde ex

Mega Zygarde ex has 1 version in the 2026–27 Standard format, with up to 310 HP as a Fighting Pokémon. Here's the maths for Knocking it Out — worked out from every Standard-legal card.

HP: 310

Weakness: Grass

Resistance: None

Prizes: 3

One-hit KOs: 14

Fastest KO: 1 Energy

Game plan

Hit its Weakness. Mega Zygarde ex is weak to Grass, so those attacks do double damage. 12 Standard cards can Knock it Out in one hit that way — the fastest needs just 1 Energy.
Win the Prize trade. It gives up 3 Prize cards when Knocked Out. 4 single-Prize Pokémon can take it out in one attack, so you trade 1 Prize for 3.
Plan for its big hit. Its strongest printed attack is Gaia Wave for 200 (3 Energy). 155 Standard cards have enough HP to survive one hit — before any Weakness, + or × effects.
Watch the Retreat Cost. It costs 2 Energy to retreat. If it gets stuck in the Active Spot, that's your chance.

One-hit Knock Outs using Weakness

These Grass attacks do at least 310 after Weakness. Fastest (fewest Energy) first.

Pokémon	Type	Attack	Damage	Damage to Mega Zygarde ex	HP	Prizes
Decidueye Shrouded Fable	Grass	Power Shot G	170	340	150	1
Rillaboom Twilight Masquerade	Grass	Wood Hammer GG	180	360	180	1
Leafeon ex Prismatic Evolutions	Grass	Moss Agate GRW	230	460	270	2
Iron Leaves ex Prismatic Evolutions	Grass	Prism Edge GGC	180	360	220	2
Mega Heracross ex Phantasmal Flames	Grass	Mountain Ramming GGG	170	340	280	3
Chesnaught Chaos Rising	Grass	Impound GGC	160	320	180	1
Arboliva ex Destined Rivals	Grass	Aroma Shot CCC	160	320	310	2
Erika's Vileplume ex Ascended Heroes	Grass	Bloom Powder GGC	160	320	310	2
Decidueye ex Perfect Order	Grass	Crushing Arrow GCCC	240	480	320	2
Mega Venusaur ex Mega Evolution	Grass	Jungle Dump GGGG	240	480	380	3
Tapu Bulu Shrouded Fable	Grass	Wood Hammer GGCC	220	440	140	1
Yanmega ex Destined Rivals	Grass	Jet Cyclone GGGC	210	420	280	2

One-hit Knock Outs without Weakness

Attacks with a printed 310+ damage.

Pokémon	Type	Attack	Damage	Damage to Mega Zygarde ex	HP	Prizes
Mega Dragonite ex Ascended Heroes	Dragon	Ryuno Glide WLL	330	330	370	3
Mega Emboar ex Ascended Heroes	Fire	Crimson Blast RRC	320	320	380	3

Best Prize trades

Single-Prize Pokémon that Knock Out Mega Zygarde ex in one attack — you give up 1 Prize, they give up 3.

Pokémon	Type	Attack	Damage	Damage to Mega Zygarde ex	HP	Prizes
Decidueye Shrouded Fable	Grass	Power Shot G	170	340	150	1
Rillaboom Twilight Masquerade	Grass	Wood Hammer GG	180	360	180	1
Chesnaught Chaos Rising	Grass	Impound GGC	160	320	180	1
Tapu Bulu Shrouded Fable	Grass	Wood Hammer GGCC	220	440	140	1

Pokémon that survive its biggest attack

These can take a printed 200 from Gaia Wave and stay in play (Weakness included). Single-Prize Pokémon first.

Pokémon	Type	Stage	HP	Weakness	Retreat	Prizes
Wailord Journey Together	Water	Stage 1	240	Lightning ×2	4	1
Wailord ex Pitch Black	Water	Stage 1	380	Lightning ×2	4	2
Mamoswine ex Journey Together	Fighting	Stage 2	340	Grass ×2	4	2
Palafin ex Prismatic Evolutions	Water	Stage 1	340	Lightning ×2	2	2
Steven's Metagross ex Ascended Heroes	Metal	Stage 2	340	Fire ×2	3	2
Torterra ex Temporal Forces	Grass	Stage 2	340	Fire ×2	4	2
Tyranitar ex Prismatic Evolutions	Darkness	Stage 2	340	Grass ×2	3	2
Cynthia's Garchomp ex Ascended Heroes	Fighting	Stage 2	330	Grass ×2	0	2

Every Standard Mega Zygarde ex card

Card	Set	HP	Stage	Attacks (cost · damage)	Retreat	Weakness
Mega Zygarde ex 47/88	Perfect Order J	310	Basic	Gaia Wave FFF 200 Nullifying Zero FFFFF —	2	Grass ×2

Damage is the number printed on the card. Attacks marked + or × can do more, and Abilities, Tools and Stadiums can change the maths — always read the card. Energy letters: G Grass, R Fire, W Water, L Lightning, P Psychic, F Fighting, D Darkness, M Metal, N Dragon, C Colorless (any Energy).

Questions people ask

What is Mega Zygarde ex weak to?

Mega Zygarde ex is weak to Grass, so those attacks do double damage (×2).

How much HP does Mega Zygarde ex have?

Up to 310 HP in Standard.

How many Prize cards does Mega Zygarde ex give up?

3 — it's a Mega Evolution Pokémon ex.

What can one-hit KO Mega Zygarde ex?

14 Standard cards can, going by printed damage. The fastest: Decidueye's Power Shot (1 Energy, 340 damage); Rillaboom's Wood Hammer (2 Energy, 360 damage); Leafeon ex's Moss Agate (3 Energy, 460 damage).

What is Mega Zygarde ex's strongest attack?

Gaia Wave, which prints 200 damage for 3 Energy.

Pully Play is an independent fan guide. It isn't run by The Pokémon Company. Format facts are checked against official announcements; always confirm card legality with the official rules before a tournament.

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