Dialga is card #XY77 of 211 in XY Black Star Promos (2013), a Promo illustrated by Tokiya. At about $59.60 it is the #43 most valuable card in the set. It is one of 48 Dialga cards printed so far.
2007Diamond & Pearl
2009Platinum
2011Call of Legends
2013Plasma Blast
2014Phantom Forces
2020Vivid Voltage
2022Astral Radiance
2024Surging Sparks

















See the full XY Black Star Promos card list
An ungraded Dialga from XY Black Star Promos sells for about $59.60. A PSA 10 is worth more, roughly $477 by our estimate, and a PSA 9 around $167.
It is a Promo.
Tokiya drew the art for this card.