Greninja-GX is card #SM197 of 248 in SM Black Star Promos (2017), a Promo illustrated by MPC Film. At about $34.24 it is the #46 most valuable card in the set. It is one of 36 Greninja cards printed so far.
2013XY Black Star Promos
2014XY
2017SM Black Star Promos
2018Forbidden Light
2021Fusion Strike
2022Astral Radiance
2024Twilight Masquerade
2026Chaos Rising

















See the full SM Black Star Promos card list
An ungraded Greninja-GX from SM Black Star Promos sells for about $34.24. A PSA 10 is worth more, roughly $171 by our estimate, and a PSA 9 around $78.75.
It is a Promo.
MPC Film drew the art for this card.