From Bulbapedia, the community-driven Pokémon encyclopedia.
5ban Graphics is an artist who has illustrated many cards for the Pokémon Trading Card Game from Black and White onward. The artist has designed many Trainer Cards, as well as several Full Art cards and Pokémon cards for the Black and White, XY, and Sun & Moon TCG Series.
An example of 5ban Graphics' work
Little is known about the artist. In 2012, a brief interview about the creation of card artwork was posted on the Creatures, Inc. PTCG blog.
For a list of cards illustrated by 5ban Graphics, go here.
PTCG Blog ポケモンカードができるまで ～イラスト編～ (Japanese, archived)