Kangaskhan-GX is card #SM188 of 248 in SM Black Star Promos (2017), a Promo illustrated by aky CG Works. At about $3.08 it is the #194 most valuable card in the set. It is one of 35 Kangaskhan cards printed so far.
1999Jungle
2003Aquapolis
2010HS—Triumphant
2014Flashfire
2017Sun & Moon
2019Unified Minds
2023151
202630th Celebration

















See the full SM Black Star Promos card list
An ungraded Kangaskhan-GX from SM Black Star Promos sells for about $3.08. A PSA 10 is worth more, roughly $15.40 by our estimate, and a PSA 9 around $7.08.
It is a Promo.
aky CG Works drew the art for this card.