Groudon-EX is card #XY42 of 211 in XY Black Star Promos (2013), a Promo illustrated by Eske Yoshinob. At about $18.98 it is the #112 most valuable card in the set. It is one of 34 Groudon cards printed so far.
2003Nintendo Black Star Promos
2005Delta Species
2008Legends Awakened
2012Dark Explorers
2013XY Black Star Promos
2015Double Crisis
2019Cosmic Eclipse
2023Paradox Rift

















See the full XY Black Star Promos card list
An ungraded Groudon-EX from XY Black Star Promos sells for about $18.98. A PSA 10 is worth more, roughly $152 by our estimate, and a PSA 9 around $53.14.
It is a Promo.
Eske Yoshinob drew the art for this card.