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Updated June 12, 2026Jolteon ex and Jolteon Deck Guide in Pokémon TCG Pocket
Evolve on turn one and tax every Energy attachment with this hyper-aggressive Eevee deck built around Jolteon ex's Electromagnetic Wall.
This is an Eevee aggro deck that punishes the opponent for playing the game. Jolteon ex's Electromagnetic Wall chips 20 damage onto opposing Pokémon whenever Energy comes off their Energy Zone, while the non-ex Jolteon swings for 60 on the very first turn thanks to Eevee's Boosted Evolution. The win condition is simple: stack passive Wall damage on top of cheap attacks, then use Cyrus to drag wounded Pokémon into the Active Spot and close out three points before slower decks ever stabilize.
The decklist
How it works
Jolteon ex is the engine of the deck. Its Electromagnetic Wall ability reads:
as long as this Pokémon is in the Active Spot, whenever your opponent attaches
an Energy from their Energy Zone to 1 of their Pokémon, do 20 damage to that
Pokémon. That means every single turn your opponent develops, one of their
Pokémon eats 20 damage before it ever attacks, and abilities that attach from
the Energy Zone trigger it too. With 140 HP it can hold the Active Spot for a
while, and once you have Lightning attached,
Mach Bolt hits for a clean 80 to finish what the Wall started.
This Eevee is what makes the deck so fast. Its Boosted Evolution ability lets
it evolve during your first turn or the turn you play it, as long as it sits
in the Active Spot. That breaks the normal evolution timing rules: you can
drop Eevee on turn one and immediately turn it into Jolteon or Jolteon ex,
skipping an entire turn of setup. Its Colorless Stampede
attack for 10 is forgettable, and at 50 HP it is fragile, so the whole point
is to never attack with it and never leave it unevolved.
The non-ex Jolteon is the early tempo attacker and the late-game point closer.
Beginning Bolt costs just Lightning and does 40 damage,
plus 20 more if Jolteon evolved during this turn, so a turn-one Eevee into
Jolteon going second swings for 60 immediately. At 90 HP it trades cheaply:
when it goes down your opponent only collects 1 point, while it has usually
banked 60 or more damage on the way out. Holding the second copy in hand lets
you repeat the evolve-and-strike trick mid game for another 60.
Cyrus converts all that incidental damage into knockouts. It switches in one of your opponent's Benched Pokémon that has damage on it, and since Electromagnetic Wall sprays 20s onto whatever your opponent powers up, there is almost always a legal target. Drag a chipped attacker into Mach Bolt range before it is ready, or pull up a damaged support Pokémon for an easy point. Two copies are correct here because this deck wins by denying the opponent the luxury of hiding anything on the Bench.
Matchups
| Matchup | Favorability | How to play it |
|---|---|---|
| Suicune ex Baxcalibur | Favored | Suicune ex has 140 HP and weakness to Lightning, so Mach Bolt hits it for 100 and two attacks remove it for 2 points. Baxcalibur's Ice Maker attaches from the Energy Zone, which means every activation also triggers Electromagnetic Wall for 20. Keep your own Bench small so Crystal Waltz scales as low as possible. |
| Mega Blaziken ex Greninja | Even | Greninja has 120 HP and is weak to Lightning, so Mach Bolt for 100 plus a single Wall ping is exactly lethal; take those cheap points early. Mega Blaziken ex's Mega Burning hits 120 and the Burn can finish a 140 HP Jolteon ex, so do not assume you survive the hit. Save Red and Cyrus to convert Wall chip into the 3-point knockout. |
| Mega Altaria ex Espeon | Even | Mega Harmony caps at 130 with a full Bench, leaving Jolteon ex alive at 140 HP, and Eevee Bag's heal of 20 on each of your Eevee evolutions keeps it out of range again. Grind Mega Altaria ex's 190 HP down with Wall triggers plus Mach Bolt, and use Red for 20 extra on the finishing turn. Cyrus a chipped 90 HP Espeon for an easy point whenever possible. |
| Magnezone Miraidon ex | Unfavored | Neither of their attackers is weak to you, and Magnezone's 90 damage Mirror Shot two-shots Jolteon ex while threatening to blank your attack on a coin flip. Keep Jolteon ex Active so every Energy they attach costs them 20, which taxes Miraidon ex's Hadron Ray plan. Use Red plus two Wall pings to put 140 HP Miraidon ex in Mach Bolt range for 2 points. |
| Mega Lucario ex Hitmontop | Heavily unfavored | Every Pokémon in this deck is weak to  Fighting, so Fighting Pulse takes 110 minimum and one-shots even Jolteon ex with the extra Energy bonus. Hitmontop's Piercing Spin also snipes your 50 HP Eevee on the Bench. Race for fast points with turn-one Jolteon, Red Card their setup, and accept trades; you cannot win a long game here. |
Tech options and swaps
The one-of slots are the deck's adjustable dials. Red adds 20 damage to your attacks against an Active Pokémon ex for the turn, which turns Mach Bolt into 100 and lines up two-turn knockouts on big Mega attackers when combined with Wall chip. Sabrina forces the opponent's Active to the Bench, useful for dodging a powered-up threat. Rocky Helmet returns 20 whenever its holder is hit in the Active Spot, stacking neatly with everything else Jolteon ex does passively. In an ex-heavy meta, a second Red over Rocky Helmet closes games faster; in slower metas, the second Sabrina-style disruption slot is better spent leaning on Red Card and Copycat.
How to pilot it
In your opening hand, the only card that matters is Eevee. Always put it in the Active Spot, because Boosted Evolution only works there. Going second, the dream line is turn one: Eevee Active, evolve into Jolteon, attach Lightning, and hit Beginning Bolt for 60. Going first you get no Energy attachment on turn one, but you can still evolve immediately; in that case prefer Jolteon ex so Electromagnetic Wall is already taxing your opponent's very first Energy attachment.
From turn two onward, get Jolteon ex into the Active Spot and keep it there, attaching Lightning each turn until Mach Bolt is online at Lightning. Your opponent now loses 20 HP somewhere every time they develop, and your job is to track where that damage lands so Cyrus can cash it in. Eevee ex is the backup starter: its Veevee ’volve ability lets it evolve into any Pokémon that evolves from Eevee, but it cannot evolve during your first turn or the turn you play it, so bench it early. Its Colorless Bite for 30 and 90 HP make it a passable emergency attacker.
Use Professor's Research and Copycat aggressively to find evolutions, and time Red Card for the turn before an opponent's key play. Eevee Bag is a real decision every time: the extra 10 damage turns Mach Bolt into 90 and Beginning Bolt into 70, but healing 20 from each of your Eevee evolutions often keeps Jolteon ex out of two-hit range instead. Common misplays to avoid: benching Eevee and expecting to evolve it that turn (Boosted Evolution is Active only), overfilling your Bench against spread damage, attacking with Eevee instead of evolving, and spending Cyrus on an undamaged board.
Deck strengths
- Fastest evolution line in the format thanks to Boosted Evolution
- Electromagnetic Wall generates free damage every single opponent turn
- Cheap attack costs mean you are never stuck waiting on Energy
- Cyrus plus constant chip damage turns the opponent's Bench into targets
Deck weaknesses
- The entire deck shares Fighting weakness and gets run over by decks of that type
- Low HP across the board, with 50 HP Eevee as a forced early Active
- Everything hinges on opening with Eevee; without it the deck does nothing
- Mach Bolt's 80 damage struggles against 180 plus HP Mega attackers without Red
Is it worth building?
Yes, especially for the cost. The only premium pulls are two Jolteon ex and a single Eevee ex; the rest of the list is common trainers and low-rarity Pokémon, making this one of the cheaper competitive builds to finish. It suits aggressive players who like dictating tempo from turn one and squeezing value out of every point of chip damage. If your ladder is full of Fighting decks it will frustrate you, but everywhere else it converts raw speed into wins remarkably often.
