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How to beat Mega Gardevoir ex

Mega Gardevoir ex has 1 version in the 2026–27 Standard format, with up to 360 HP as a Psychic Pokémon. Here's the maths for Knocking it Out — worked out from every Standard-legal card.

HP

360

Weakness

Darkness

Resistance

Fighting

Prizes

3

One-hit KOs

11

Fastest KO

2 Energy

Game plan

1. Hit its Weakness. Mega Gardevoir ex is weak to Darkness, so those attacks do double damage. 11 Standard cards can Knock it Out in one hit that way — the fastest needs just 2 Energy.
2. Win the Prize trade. It gives up 3 Prize cards when Knocked Out. 1 single-Prize Pokémon can take it out in one attack, so you trade 1 Prize for 3.
3. Avoid Fighting attacks. Mega Gardevoir ex resists them, so they do less damage.
4. Plan for its big hit. Its strongest printed attack is Mega Symphonia for 50× (1 Energy). 1,668 Standard cards have enough HP to survive one hit — before any Weakness, + or × effects.
5. 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 Darkness attacks do at least 360 after Weakness. Fastest (fewest Energy) first.

One-hit Knock Outs without Weakness

Attacks with a printed 360+ damage (after Resistance).

None in Standard right now.

Best Prize trades

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

Pokémon that survive its biggest attack

These can take a printed 50× from Mega Symphonia and stay in play (Weakness included). Single-Prize Pokémon first.

Every Standard Mega Gardevoir ex card

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).

Related: all Gardevoir cards in Standard · how to knock out a 360 HP Pokémon · Darkness vs Psychic · beating big Pokémon ex · more counter guides

Questions people ask

What is Mega Gardevoir ex weak to?

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

How much HP does Mega Gardevoir ex have?

Up to 360 HP in Standard.

How many Prize cards does Mega Gardevoir ex give up?

3 — it's a Mega Evolution Pokémon ex.

What can one-hit KO Mega Gardevoir ex?

11 Standard cards can, going by printed damage. The fastest: Mega Gengar ex's Void Gale (2 Energy, 460 damage); Hydreigon ex's Crashing Headbutt (2 Energy, 400 damage); Marnie's Grimmsnarl ex's Shadow Bullet (2 Energy, 360 damage).

What is Mega Gardevoir ex's strongest attack?

Mega Symphonia, which prints 50× damage for 1 Energy.

What does Mega Gardevoir ex resist?

Fighting — those attacks do less damage to it.