Koga's Arbok is card #25 of 132 in Gym Challenge (2000), a Rare illustrated by Ken Sugimori. At about $17.07 it is the #49 most valuable card in the set. In a Gym Challenge booster it turns up about once every 32 packs. It is one of 20 Arbok cards printed so far.
1999Fossil
2000Team Rocket
2002Expedition Base Set
2004Team Rocket Returns
2008Great Encounters
2014XY
2019Hidden Fates
2023151

















See the full Gym Challenge card list
An ungraded Koga's Arbok from Gym Challenge sells for about $17.07. A PSA 10 is worth more, roughly $222 by our estimate, and a PSA 9 around $68.28.
It is a Rare, and it shows up about once every 32 Gym Challenge packs.
Ken Sugimori drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Gym Challenge 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.