How to beat Espeon ex

Espeon ex has 2 versions in the 2026–27 Standard format, with up to 270 HP as a Psychic Pokémon. Here's the maths for Knocking it Out — worked out from every Standard-legal card.

Game plan

1. Hit its Weakness. Espeon ex is weak to Darkness, so those attacks do double damage. 27 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 2 Prize cards when Knocked Out. 10 single-Prize Pokémon can take it out in one attack, so you trade 1 Prize for 2.
3. Avoid Fighting attacks. Espeon ex resists them, so they do less damage.
4. Plan for its big hit. Its strongest printed attack is Psych Out for 160 (3 Energy). 254 Standard cards have enough HP to survive one hit — before any Weakness, + or × effects.
5. Watch the Retreat Cost. It costs 1 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 270 after Weakness. Fastest (fewest Energy) first.

One-hit Knock Outs without Weakness

Attacks with a printed 270+ damage (after Resistance).

Best Prize trades

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

Pokémon that survive its biggest attack

These can take a printed 160 from Psych Out and stay in play (Weakness included). Single-Prize Pokémon first.

Every Standard Espeon 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 Espeon cards in Standard · how to knock out a 270 HP Pokémon · Darkness vs Psychic · beating big Pokémon ex · more counter guides

Questions people ask

What is Espeon ex weak to?

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

How much HP does Espeon ex have?

Up to 270 HP in Standard (270 on the Prismatic Evolutions version, 260 on the 30th Celebration version).

How many Prize cards does Espeon ex give up?

2 — it's a Pokémon ex.

What can one-hit KO Espeon ex?

42 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 Espeon ex's strongest attack?

Psych Out, which prints 160 damage for 3 Energy.

What does Espeon ex resist?

Fighting — those attacks do less damage to it.