Mewtwo is card #14 of 53 in Wizards Black Star Promos (1999), a Promo illustrated by Benimaru Itoh. At about $29.39 it is the #35 most valuable card in the set. It is one of 89 Mewtwo cards printed so far.
1999Base Set
2003Ruby & Sapphire
2006Holon Phantoms
2009Pokémon Rumble
2015BREAKthrough
2019Unified Minds
2023Crown Zenith
202630th Celebration

















See the full Wizards Black Star Promos card list
An ungraded Mewtwo from Wizards Black Star Promos sells for about $29.39. A PSA 10 is worth more, roughly $382 by our estimate, and a PSA 9 around $118.
It is a Promo.
Benimaru Itoh drew the art for this card.