Two Prize cards instead of one. That single rule change, introduced years before the XY block even started, is the reason Pokemon-EX exists at all — and XY-era EX and Mega EX cards, including Mega Evolution, inherited that same trade-off.
This guide walks through what a Pokemon-EX actually is, what changes when “M” gets added to the name, and how that plays out across specific Japanese XY-era singles — from a Phantom Gate Gengar EX through to a Genshi Groudon EX that isn’t technically a Mega Evolution card at all, despite looking like one.
Pokemon-EX give up two Prize cards on knockout instead of one; M (Mega Evolution) Pokemon-EX add a single-attack, turn-ending transformation on top of that.
- Set reference: card list.
- Graded Japanese XY-era singles are listed on our store as of this update.
Mechanics details are sourced from Bulbapedia, cited throughout. Card numbers and rarities are cross-checked against limitlesstcg.com’s card database. USD figures convert at ¥154/USD, approximate.
XY-Era EX and Mega EX Cards: The Two-Prize Trade-off
Pokemon-EX debuted in the Next Destinies expansion, part of the Black & White block that preceded the XY era. The mechanic’s defining rule is simple and has stayed consistent ever since: when a Pokemon-EX is knocked out, the opponent takes two Prize cards instead of the usual one.
That’s the whole trade-off in one sentence — bigger HP and stronger attacks in exchange for handing your opponent a faster path to their six Prizes if the card goes down. Every EX and Mega EX card in this guide is built on top of that same rule. Understanding it first is what makes the “M” cards below make sense.
What Is an M / Mega Pokemon-EX?
M Pokemon-EX arrived with the XY expansion itself — released in Japan on December 13, 2013 (126 cards) and in English on February 5, 2014 (146 cards) — bringing the Mega Evolution concept from the X & Y video games into the card game.
Three rules define the mechanic:
- Turn-ending transformation. The moment a Pokemon becomes a Mega Evolution Pokemon, that player’s turn ends immediately — unless the matching Spirit Link tool card is already attached, in which case play continues normally.
- One attack. An M Pokemon-EX carries a single attack, with the attack’s name displayed inside the card’s illustration rather than a standard text box. The card name itself carries the “MEGA” stage marker and a stylized “Mega” prefix.
- Basic-EX evolution line. M Pokemon-EX evolve from the Basic-stage version of the matching Pokemon-EX — not from a Stage 1 or Stage 2 form.
One note on terminology: Pokemon released a separate “Mega Evolution” expansion in September 2025 built around Mega Evolution Pokemon ex with a three-Prize knockout — a newer, different mechanic from the one-Prize-jump M Pokemon-EX covered in this guide. The M Pokemon-EX cards below are from the original 2013–2016 XY-era mechanic.
XY-Era Graded Cards and the CP6 Pack
| Card | Set | Price |
|---|---|---|
| PSA 10 Ho-Oh P [XY-P 225] | Special Set "Ho-Oh + Lugia" | ¥133,120 (~$864) |
| 20th Anniversary Japanese Pokemon Booster Pack [CP6] | XY BREAK Concept Pack (2016) | ¥120,000 (~$779) (update: currently sold out — restock requests via Quick Order) |
| PSA 10 M Venusaur EX SR 1ED [CP6 089/087] | Concept Pack "Pokemon Card Game Expansion Pack 20th Anniversary" | ¥101,055 (~$656) |
| PSA 10 Entei [XY 011/171] | High Class Pack "The Best of XY" | ¥39,590 (~$257) (update: currently sold out — restock requests via Quick Order) |
| PSA 10 Zoroark [XY 075/171] | High Class Pack "The Best of XY" | ¥34,999 (~$227) |
| PSA 10 Xerneas [XY 097/171] | High Class Pack "The Best of XY" | ¥18,480 (~$120) |
| PSA 10 M Gardevoir EX [XY 092/171] | High Class Pack "The Best of XY" | ¥28,000 (~$182) |
M Venusaur EX is a 1st Edition copy from CP6, which puts it inside Japan’s 1ED printing window as well as its Mega Evolution one.
Gengar EX to M Gengar EX: One Line, Two Sets
Gengar EX 033/088 is Phantom Gate’s (XY4, September 13, 2014) headline single — a Double Rare (RR), 170 HP, Colorless-cost with a Psychic-type attack line. Its English structural counterpart, Gengar EX from Phantom Forces, sits in that set’s secret-rare band as an Ultra Rare instead — a reminder that rarity labels for the same card can shift between the Japanese and English printings of a set.
Two years later, Premium Champion Pack (CP4, April 16, 2016) reprinted the evolved form as M Gengar EX 049/131, evolving from Gengar-EX, with M Gengar-EX from Phantom Forces #35 as its English structural counterpart. CP4 cards don’t carry a separate printed rarity mark — the whole 131-card set shares one reverse mirror holofoil finish instead.
For the full Phantom Gate breakdown, including its secret-rare number range, see our XY4 Phantom Gate guide. For CP4’s full 131-card structure and pack format, see our Premium Champion Pack (CP4) guide.
Reading the Card Number: Charizard-EX and Wild Blaze (XY2)
XY-era EX and Mega EX cards from the same set can look almost identical at a glance, and the difference usually comes down to the printed number in the corner rather than the artwork. Wild Blaze (XY2) is a clean example: card 055/080 checks out against the primary card database as a Double Rare Charizard-EX — the regular, non-Mega version. Commercial listings for a Mega-prefixed “M Charizard EX” 1st Edition from the same set instead reference a different number, 089/080, which we have not been able to independently verify against the same database.
If you’re specifically chasing the Mega-prefixed Charizard line across every printing rather than this one set, our Mega Charizard cards value guide tracks pricing across the full set of printings and is the better starting point for confirming which number belongs to which card before you order.
XY11’s Split Release: M Gardevoir and M Steelix
“XY11” wasn’t a single Japanese set. It split into two separate releases — Cruel Traitor, built around the M Gardevoir line, and Explosive Fighter (also referenced as Fever-Burst Fighter), built around M Steelix. Both share the /054 number pattern, which is the split’s fingerprint.
| Card | Set | Double Rare (RR) | Secret Rare (SR) |
|---|---|---|---|
| M Gardevoir EX | Cruel Traitor | 039/054 | 057/054 |
| M Steelix EX | Explosive Fighter | 033/054, 1ED confirmed | 057/054 |
The rarer Secret Rare printing sits at 057/054 in both sets, and both are 1st Edition printings: M Gardevoir EX SR 1ED [XY11-1 057/054] and M Steelix EX SR 1ED [XY11-2 057/054].
Both cards evolve from their respective Basic-stage Pokemon-EX, consistent with the M Pokemon-EX rule covered earlier. For the wider Mega Gardevoir picture across other printings, see our Mega Gardevoir cards value guide.
Beyond Mega: Genshi Groudon EX and Primal Reversion
Genshi Groudon EX is not a Mega Evolution card, even though it sits in the same era and reads like a natural sibling to the M-prefixed cards above it. It runs on Primal Reversion (Genshi Kaiki), the transformation tied to the “Red Orb” story mechanic from Omega Ruby & Alpha Sapphire. In the TCG it’s implemented as a Pokemon-EX derivative with its own extended mechanic, separate from the “M” Mega Evolution line covered in the rest of this guide.
Gaia Volcano (XY5) paired the two forms directly: a pre-transformation Groudon EX at 073/070 (SR, 180 HP) and the transformed Genshi Groudon EX at 074/070 (SR, 240 HP, Fighting-type). The English structural counterpart is Primal Groudon-EX, first from Primal Clash #86/160 and later reprinted in Ancient Origins #151/160 as a Rare Ultra.
XY-Era EX Cards and the Japanese 1st Edition Window
Japan’s 1st Edition (1ED) stamp ran from 2001 through September 2016, when the run ended with Expansion Pack 20th Anniversary (CP6) — a much longer and later window than the short English WOTC 1st Edition era most collectors already know. The XY block (2013–2016) sits entirely inside that Japanese window, which is why 1ED printings turn up across Wild Blaze, Phantom Gate, Cruel Traitor, and Explosive Fighter alike.
If you’re new to how the Japanese 1ED stamp works, what it looks like, and how it differs from the English version, our Japanese 1st Edition guide covers the full timeline. For the wider XY block these sets belong to, our XY-era Japanese Pokemon guide maps the mainline sets and concept packs together in one place.
Where to Buy XY-Era EX & Mega EX Cards from Japan
Graded Japanese singles ship from Tokyo. The full graded lineup is on the PSA 10 collection. Genshi Groudon EX SR [XY5 074/070] sold out, and Gengar EX RR [XY4 033/088], Charizard-EX 1ED [XY2 055/080], M Gardevoir EX SR 1ED [XY11-1 057/054], M Gengar EX [CP4 049/131] and M Steelix EX SR 1ED [XY11-2 057/054] are not listed, at the time of this update — sourcing requests go through Quick Order.
For set-by-set depth on any single card above, see our Phantom Gate guide and Premium Champion Pack (CP4) guide, or start from our XY-era hub to see how the whole block fits together.
Frequently Asked Questions
What is a Pokemon-EX, and what happens when one is knocked out?
Pokemon-EX debuted in the Next Destinies expansion, part of the Black & White block. When a Pokemon-EX is knocked out, the opponent takes two Prize cards instead of the usual one — the mechanic’s defining trade-off.
What is an M / Mega Pokemon-EX, and how is it different from a regular Pokemon-EX?
M Pokemon-EX arrived with the XY expansion in Japan. It carries a single attack, ends the player’s turn immediately upon transforming unless a Spirit Link tool is attached, and evolves only from the Basic-stage version of the matching Pokemon-EX.
What’s the difference between Gengar EX and M Gengar EX?
Gengar EX [XY4 033/088] from Phantom Gate (2014) is a Double Rare, non-Mega Pokemon-EX. M Gengar EX [CP4 049/131] from Premium Champion Pack (2016) is the evolved Mega Evolution form of the same line, reprinted two years later.
Why does the card number matter for Wild Blaze’s Charizard-EX?
Card 055/080 from Wild Blaze (XY2) checks out as a regular Double Rare Charizard-EX against the primary card database, not the Mega-prefixed version. Commercial listings for a Mega-prefixed 1st Edition copy from the same set reference a different number, 089/080, which we have not independently verified.
Is Genshi Groudon EX a Mega Evolution card?
No. It runs on Primal Reversion, a related but separate XY-era mechanic tied to the “Red Orb” story device from Omega Ruby & Alpha Sapphire, not the “M” Mega Evolution line covered elsewhere in this guide.
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