Hey Some1sPC readers! It’s been a hot minute! I’ve been busy with pursuing my doctorate this past year, but the second year of school has proved to be a little more chill, so I’ve decided to hit this season hard! I’m going to be talking to you guys today about a deck that I think has a ton of potential heading into the Expanded format. If you were watching the World Championships a few weekends ago, you'll have seen that Mew-Box won the whole thing, using the incredible flexibility of Mewtwo & Mew-GX to hit hard and adapt to any situation it’s put in. I figured if Mew-Box can be a strong force in Standard, there’s no question that it’ll be even fiercer in Expanded with so many more tools at its disposal.

 

The biggest new tool that it gets is Dimension Valley. Dimension Valley has been an inclusion in many of the top decks in the Expanded format in recent years and nowadays is no exception. Night March, Trevenant, and the old Necrozma/Garb chose D Valley as their Stadium of choice as a way to attack as efficiently as possible. I think Necrozma/Garb is the deck that took the most advantage of it, combining it with Double Colorless Energy to utilize a CCC attack for just one attachment. With how much hype that Mew FCO got upon its release because of its interaction with D Valley, Mewtwo & Mew-GX should get an exponential amount more. (Note: I’ll be referring to Mewtwo & Mew-GX as solely “Mewtwo” for the sake of brevity). Mewtwo isn't restricted to only copying Basic Pokémon, and it can even copy Pokémon in the Discard pile, all while having a massive 270-HP. So let's look into the tools that Mewtwo has at its disposal, and why I think it can become one of the top decks in the Expanded format. 

Mew-Box not only gains D Valley as a way to efficiently recruit the attacks of Pokémon from the past but it also gains Battle Compressor as an effective way to discard all of said Pokémon. Because of the versatility that Mewtwo is capable of, there are a ton of different ways in which to build the deck. We could try to achieve full efficiency by using D Valley in combination with Welder and Double Colorless Energy to use high-Energy attacks like Charizard-GX’s “Crimson Blaze” as quickly as possible, or we could try a slower approach with Rowlet & Alolan Exeggutor-GX, which I’ll get into later in the article. 

 

Before we get into the plethora of ways in which we can build Mew-Box, I want to give you all a comprehensive list of all of the Pokémon-EX and -GX that are Expanded legal right now to get an idea of what sorts of capabilities we can take advantage of. I think it’s super exciting because many of these cards saw next to no play but gain some new life thanks to Mewtwo. We'll also look at some of the different situations that these Pokémon's attacks will be useful in, depending on what your build is trying to accomplish. 

 

Here's my list of Pokémon -EX and -GX that have some sort of playability now with Mewtwo-GX and I'll give some explanations to the ones that I think have the most potential. 

 

(Note: There are some Pokémon on here that have massive Darkness Energy requirements because I imagined some sort of possible Mew-Box deck that could use Milotic FLF to achieve some of these high-Energy requirements quickly.)

 

Alolan Ninetales-GX

Magcargo-GX

Reshiram & Charizard-GX

Naganadel-GX UNM

Dragonite-GX UNM

Rowlet & Alolan Exeggutor-GX 

Alolan Raichu & Raichu-GX

M Sableye & Tyranitar-GX

Latios-GX

Umbreon & Darkrai-GX

Espeon & Deoxys-GX

Blastoise-GX

Alolan Marowak-GX

Celesteela-GX

Pheromosa & Buzzwole-GX

Greninja-GX

Eevee & Snorlax-GX

Hoopa-GX

Wailord & Magikarp-GX

Lugia-GX

Solgaleo-GX PR

Drampa-GX

Honchkrow-GX

Kingdra-GX

Naganadel-GX FLI

Altaria-GX

Articuno-GX

Dawn Wings Necrozma-GX

Palkia-GX

Lucario-GX

Raikou-GX

Guzzlord-GX

Nihilego-GX

Salazzle-GX

Necrozma-GX

Tsareena-GX

Tapu Koko-GX

Noivern-GX

Gardevoir-GX

Darkrai-GX

Charizard-GX

Sylveon-GX

Lycanroc-GX FLI

Lycanroc-GX PR

Vikavolt-GX

Solgaleo-GX SUM

Houndoom-EX

Espeon-EX

Mewtwo-EX

M Mewtwo-EX

M Glalie-EX

Giratina-EX

Machamp-EX

M Sceptile-EX

Shaymin-EX

M Rayquaza-EX ROS 61

M Diancie-EX

M Gengar-EX

M Gardevoir-EX 

Seismitoad-EX

Kyurem-EX

Tornadus-EX PLF 

Latios-EX PLF

Hoopa-EX,
Raikou-EX

Tapu Fini-GX

Kyogre-EX

Mewtwo-EX

 

Alolan Ninetales-GX GRI

“Ice Path GX” was already good enough to earn Ninetales some play upon release but it gets even better now when it can be used by a 270-HP Pokémon for a single Colorless Energy with D Valley. “Ice Blade” can also provide some snipe for taking out big threats to Mewtwo like Garbodor and Alolan Muk.

 

Naganadel-GX FLI 

“Stinger GX” is the single best GX attack in the game right now since, at best, it says, "take three prizes and give your opponent an extra two prizes." It can be used for a Triple Acceleration Energy or copied by Mewtwo now for just a Double Colorless Energy with D Valley.

 

Dragonite-GX UNM 

This card fights with Kingdra-GX for a spot in ArchieStoise to provide Mewtwo with a strong one-shot option. Dragonite allows Mewtwo to hit 270 for five, whereas Kingdra hits 260 for the same amount of Energy but without the drawback of having to discard three. Speaking of Kingdra-GX...

 

Kingdra-GX 

This is a card that already sees play for its “Hydro Pump” attack in Archie's, but that's not all it has going for it. “Maelstrom GX” is a powerful GX attack when it can be used before your opponent gets a chance to evolve their smaller Basic Pokémon, as I'll show later in one of my favorite Mew-Box builds.

 

Lugia-GX 

“Lost Purge” is such a good attack that it was featured in some stall decks last format along with Counter Gain and Double Colorless Energy in order to instantly rid an opponent’s board of a threat. Now we can skip Counter Gain altogether and use “Lost Purge” for a Double Colorless Energy whenever we need to with D Valley. 

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