Mega Mewtwo X shows up as a background cameo across 1 Pokémon card. These appearances span 2015, illustrated by 5ban Graphics.
These cameos cluster in BREAKthrough most heavily; 5ban Graphics accounts for 1 of the appearances.
These cards feature energy_ring, space_background, starry and sparkling in their background art, illustrated by artists like 5ban Graphics.
Mega Mewtwo X appears as a background cameo across 1 Pokémon card.
These appearances range from clear sightings to barely-visible silhouettes, scattered across 2015 of the TCG.
Each cameo rewards collectors who pause to look closely at the card art.