Some cards reward a closer look. Rotom Dex is one of the pokemon that quietly appears in the background of 5 other cards, painted by 5ban Graphics and Naoki Saito.
Of the 5 cards, Sun & Moon contributes the largest cluster. The illustrator most often responsible is 5ban Graphics, whose Rotom Dex cameos appear in 3 of these cards.
5 cards with Rotom Dex in the background spanning 2017, with art by 5ban Graphics and Naoki Saito.
Rotom Dex appears as a background cameo across 5 Pokémon cards.
These appearances range from clear sightings to barely-visible silhouettes, scattered across 2017 of the TCG.
Each cameo rewards collectors who pause to look closely at the card art.