The Gengar XY166 Black Star Promo Pokemon card from 2016 is a highly sought-after collectable for Pokemon enthusiasts and collectors alike. Featuring a low population, this card from the Ace 1 series is a rare find for those looking to add a unique and valuable piece to their collection. With its striking design and exclusive promotional status, this Gengar card is a must-have for any serious collector of CCG individual cards.