Gengar is card #94 of 102 in HS—Triumphant (2010), a Rare Prime illustrated by Takashi Yamaguchi. At about $561 it is the #1 most valuable card in the set. In a HS—Triumphant booster it turns up about once every 54 packs. It is one of 53 Gengar cards printed so far.
1 copy has been graded by players in Holobrook's grading game. None has come back a 10 yet.
POP 1 is still open for PSA, BGS and CGC: the first player to grade this card a 10 with each company gets a one-of-a-kind POP 1 slab. See the Mint
1999Fossil
2003Skyridge
2007Diamond & Pearl
2010HS—Triumphant
2016Generations
2020Sword & Shield
2023151
202630th Celebration

















See the full HS—Triumphant card list
An ungraded Gengar from HS—Triumphant sells for about $561. A PSA 10 is worth more, roughly $4,487 by our estimate, and a PSA 9 around $1,571.
It is a Rare Prime, and it shows up about once every 54 HS—Triumphant packs.
Takashi Yamaguchi drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open HS—Triumphant booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.