How to beat Hydreigon ex

Q: How much HP does Hydreigon ex have?

Up to 330 HP in Standard (330 on the White Flare version, 330 on the Surging Sparks version).

Hydreigon ex has 2 versions in the 2026–27 Standard format, with up to 330 HP as a Darkness Pokémon. Here's the maths for Knocking it Out — worked out from every Standard-legal card.

HP: 330

Weakness: Grass

Resistance: None

Prizes: 2

One-hit KOs: 10

Fastest KO: 1 Energy

Game plan

Hit its Weakness. Hydreigon ex is weak to Grass, so those attacks do double damage. 9 Standard cards can Knock it Out in one hit that way — the fastest needs just 1 Energy.
Win the Prize trade. It gives up 2 Prize cards when Knocked Out. 3 single-Prize Pokémon can take it out in one attack, so you trade 1 Prize for 2.
Plan for its big hit. Its strongest printed attack is Dark Bite for 200 (5 Energy). 172 Standard cards have enough HP to survive one hit — before any Weakness, + or × effects.
Watch the Retreat Cost. It costs 3 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 330 after Weakness. Fastest (fewest Energy) first.

Pokémon	Type	Attack	Damage	Damage to Hydreigon 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
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 330+ damage.

Pokémon	Type	Attack	Damage	Damage to Hydreigon ex	HP	Prizes
Mega Dragonite ex Ascended Heroes	Dragon	Ryuno Glide WLL	330	330	370	3

Best Prize trades

Single-Prize Pokémon that Knock Out Hydreigon ex in one attack — you give up 1 Prize, they give up 2.

Pokémon	Type	Attack	Damage	Damage to Hydreigon 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
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 Dark Bite 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
Slaking ex Surging Sparks	Colorless	Stage 2	340	Fighting ×2	4	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

Every Standard Hydreigon ex card

Card	Set	HP	Stage	Attacks (cost · damage)	Retreat	Weakness
Hydreigon ex 67/86 Ability: Greedy Eater	White Flare I	330	Stage 2	Dark Bite DDDCC 200	3	Grass ×2
Hydreigon ex 119/191	Surging Sparks H	330	Stage 2	Crashing Headbutt DC 200 Obsidian PDMC 130	3	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 Hydreigon ex weak to?

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

How much HP does Hydreigon ex have?

Up to 330 HP in Standard (330 on the White Flare version, 330 on the Surging Sparks version).

How many Prize cards does Hydreigon ex give up?

2 — it's a Pokémon ex.

What can one-hit KO Hydreigon ex?

10 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 Hydreigon ex's strongest attack?

Dark Bite, which prints 200 damage for 5 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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