How to beat Keldeo ex
Keldeo ex has 1 version in the 2026–27 Standard format, with up to 210 HP as a Water Pokémon. Here's the maths for Knocking it Out — worked out from every Standard-legal card.
- HP
- 210
- Weakness
- Lightning
- Resistance
- None
- Prizes
- 2
- One-hit KOs
- 112
- Fastest KO
- 1 Energy
Game plan
- Hit its Weakness. Keldeo ex is weak to Lightning, so those attacks do double damage. 49 Standard cards can Knock it Out in one hit that way — the fastest needs just 2 Energy.
- Win the Prize trade. It gives up 2 Prize cards when Knocked Out. 53 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 Sonic Edge for 120 (3 Energy). 533 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 Lightning attacks do at least 210 after Weakness. Fastest (fewest Energy) first.
| Pokémon | Type | Attack | Damage | Damage to Keldeo ex | HP | Prizes |
|---|---|---|---|---|---|---|
| Vikavolt Pitch Black | Lightning | Giga Railgun LL | 260 | 520 | 160 | 1 |
| Luxray ex Twilight Masquerade | Lightning | Volt Strike LL | 250 | 500 | 310 | 2 |
| Electivire Stellar Crown | Lightning | Unleash Lightning LL | 220 | 440 | 150 | 1 |
| Alolan Golem Journey Together | Lightning | Megaton Fall LC | 160 | 320 | 180 | 1 |
| Magnezone Mega Evolution | Lightning | Flashing Bolt LL | 160 | 320 | 160 | 1 |
| Ampharos Chaos Rising | Lightning | Flashing Bolt LC | 140 | 280 | 160 | 1 |
| Pawmot Phantasmal Flames | Lightning | Voltaic Fist LL | 130 | 260 | 140 | 1 |
| Rotom ex Phantasmal Flames | Lightning | Thunderbolt LC | 130 | 260 | 190 | 2 |
| Manectric Destined Rivals | Lightning | Flash Impact LC | 120 | 240 | 120 | 1 |
| Vikavolt Temporal Forces | Lightning | Circuit Cannon LL | 120+ | 240 | 160 | 1 |
| Wugtrio ex Temporal Forces | Lightning | Numbing Hold WW | 120 | 240 | 250 | 2 |
| Mega Manectric ex Mega Evolution | Lightning | Flash Ray LL | 120 | 240 | 330 | 3 |
One-hit Knock Outs without Weakness
Attacks with a printed 210+ damage.
| Pokémon | Type | Attack | Damage | Damage to Keldeo ex | HP | Prizes |
|---|---|---|---|---|---|---|
| Palafin ex Prismatic Evolutions | Water | Giga Impact W | 250 | 250 | 340 | 2 |
| Tinkaton Mega Evolution | Metal | Windup Swing M | 240- | 240 | 160 | 1 |
| Ceruledge Phantasmal Flames | Fire | Infernal Slash R | 220 | 220 | 140 | 1 |
| Slaking ex Surging Sparks | Colorless | Great Swing CC | 280 | 280 | 340 | 2 |
| Mega Lucario ex Ascended Heroes | Fighting | Mega Brave FF | 270 | 270 | 340 | 3 |
| Cynthia's Garchomp ex Ascended Heroes | Fighting | Draconic Buster FF | 260 | 260 | 330 | 2 |
| Salamence ex 30th Celebration | Dragon | Dragon Pulse RW | 240 | 240 | 330 | 2 |
| Haxorus Shrouded Fable | Dragon | Dragon Pulse FM | 230 | 230 | 170 | 1 |
| Mega Gengar ex Ascended Heroes | Darkness | Void Gale DD | 230 | 230 | 350 | 3 |
| Mega Dragonite ex Ascended Heroes | Dragon | Ryuno Glide WLL | 330 | 330 | 370 | 3 |
Best Prize trades
Single-Prize Pokémon that Knock Out Keldeo ex in one attack — you give up 1 Prize, they give up 2.
| Pokémon | Type | Attack | Damage | Damage to Keldeo ex | HP | Prizes |
|---|---|---|---|---|---|---|
| Tinkaton Mega Evolution | Metal | Windup Swing M | 240- | 240 | 160 | 1 |
| Ceruledge Phantasmal Flames | Fire | Infernal Slash R | 220 | 220 | 140 | 1 |
| Vikavolt Pitch Black | Lightning | Giga Railgun LL | 260 | 520 | 160 | 1 |
| Electivire Stellar Crown | Lightning | Unleash Lightning LL | 220 | 440 | 150 | 1 |
| Alolan Golem Journey Together | Lightning | Megaton Fall LC | 160 | 320 | 180 | 1 |
| Magnezone Mega Evolution | Lightning | Flashing Bolt LL | 160 | 320 | 160 | 1 |
| Ampharos Chaos Rising | Lightning | Flashing Bolt LC | 140 | 280 | 160 | 1 |
| Pawmot Phantasmal Flames | Lightning | Voltaic Fist LL | 130 | 260 | 140 | 1 |
Pokémon that survive its biggest attack
These can take a printed 120 from Sonic Edge 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 |
| Copperajah Shrouded Fable | Metal | Stage 1 | 200 | Fire ×2 | 4 | 1 |
| Rhyperior Stellar Crown | Fighting | Stage 2 | 200 | Grass ×2 | 4 | 1 |
| Steelix Mega Evolution | Metal | Stage 1 | 200 | Fire ×2 | 4 | 1 |
| Copperajah Journey Together | Metal | Stage 1 | 190 | Fire ×2 | 4 | 1 |
| Tyranitar Journey Together | Darkness | Stage 2 | 190 | Grass ×2 | 3 | 1 |
| Aggron Twilight Masquerade | Metal | Stage 2 | 180 | Fire ×2 | 3 | 1 |
| Alolan Golem Journey Together | Lightning | Stage 2 | 180 | Fighting ×2 | 4 | 1 |
Every Standard Keldeo ex card
| Card | Set | HP | Stage | Attacks (cost · damage) | Retreat | Weakness |
|---|---|---|---|---|---|---|
| Keldeo ex 30/86 | White Flare I | 210 | Basic | Gale Thrust WC 30+ Sonic Edge WCC 120 | 2 | Lightning ×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).
Related: all Keldeo cards in Standard · how to knock out a 210 HP Pokémon · Lightning vs Water · beating big Pokémon ex · more counter guides
Questions people ask
What is Keldeo ex weak to?
Keldeo ex is weak to Lightning, so those attacks do double damage (×2).
How much HP does Keldeo ex have?
Up to 210 HP in Standard.
How many Prize cards does Keldeo ex give up?
2 — it's a Pokémon ex.
What can one-hit KO Keldeo ex?
112 Standard cards can, going by printed damage. The fastest: Palafin ex's Giga Impact (1 Energy, 250 damage); Tinkaton's Windup Swing (1 Energy, 240 damage); Ceruledge's Infernal Slash (1 Energy, 220 damage).
What is Keldeo ex's strongest attack?
Sonic Edge, which prints 120 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.