The Mega Gengar ex Mega Battle Deck focuses on Mega Gengar as the central Pokémon, released in this deck as a Darkness-type Mega Evolution Pokémon ex card. The deck includes cards from the Phantasmal Flames expansion, with its two highlight cards being Mega Gengar ex and Haunter, the latter of which is included as both a standard card and an MEP Promo-exclusive illustration rare card. It is the international equivalent to the Japanese MEGA Starter Set Mega Gengar ex product, which was released in Japan on September 5, 2025.

Ignite a Burning Spirit of Battle! Searing blue flames rip across a dark battlefield as Mega Charizard X ex soars up and looks down upon its opponents! With a deep chill to rival the heat, the shadowy figure of Mega Gengar ex slowly rises into view, and both Pokémon prepare to attack. Determined to prove their mettle, Mega Heracross ex, Mega Lopunny ex, and even more Pokémon line up to give it their all in the Pokémon TCG: Mega Evolution— Phantasmal Flames expansion!

Mega Evolve Your Strength to the Next Stage! Striving to become stronger, Pokémon of all types are putting everything on the line to become Mega Evolution Pokémon ex! Harness the strong aura of Mega Lucario ex, embrace the overflowing power of Mega Gardevoir ex, and team up with more of these powerful Pokémon that boast devastating attacks and massive HP. But consider your strategy carefully—extra power brings extra risks! Choose your Pokémon partners and prepare for the biggest battles you’ve ever seen in the Pokémon TCG: Mega Evolution expansion.