Inevitable : That's the word that best describes the Mewtwo EX deck. The strategy is simple: Mewtwo EX starts by dealing a respectable 50 damage with "Psysphere," then switches to "Psydrive," a 150-damage attack that can be used every turn thanks to the energy support of Gardevoir's "Psyshadow" ability on the bench. Needless to say, this is enough to eliminate most threats in the metagame.
With a class-leading 150 HP and a fast setup, Mewtwo EX lives up to its reputation and excels in this role.
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Mewtwo EX - Suggested Deck List

A basic version of this list, aimed at optimizing the search for a Tarsal or a Mewtwo EX with the Poké Ball by not playing any other Basic Pokémon.
Giovanni will primarily be used to adjust the Psychic Sphere attack to 60 damage, allowing for one-hit kills of most Basic Pokémon. Choosing the number of Giovanni, Sabrina, and Red cards depends on your preference.
The list
Pokémon (12):
- 2x Mewtwo ex
- 2x Tarsal
- 2x Kirlia
- 2x Gardevoir
Trainers (12):
- 2x Poké Ball
- 2x Potion
- 2x X Speed
- 2x Professorial Research (Professor Chen)
- 2x Giovanni
- 2x Sabrina
Weaknesses
Mewtwo EX's success relies heavily on setting up Gardevoir early, as it's essential for powering up Psydrive each turn and strengthening your Psychic-type Pokémon in general. While it's possible to get by without Gardevoir, there's a distinct difference between games where it arrives as early as turn three and those where it's delayed—if it arrives, as long as you last until then.
Conclusion
Ultimately, the Mewtwo EX deck embodies a formidable and undeniable force in the Pokémon TCG. Its effectiveness relies on a simple but powerful strategy: combining the toughness of Mewtwo EX with Gardevoir's "Psychic Shadow" ability for constant energy support. With this combination, "Psydrive" becomes a repeating attack capable of neutralizing opposing threats in just a few turns.
While Gardevoir's setup is crucial for maintaining momentum, this deck offers a balance of speed and power, capable of competing with the most robust strategies in the metagame. In short, the Mewtwo EX deck isn't just another asset; it's a compelling choice for players who want to dominate their opponents with efficiency and style.
