Koga's Tangela is card #81 of 132 in Gym Challenge (2000), a Common illustrated by Atsuko Nishida. At about $4.49 it is the #96 most valuable card in the set. In a Gym Challenge booster it turns up about once every 6 packs. It is one of 29 Tangela cards printed so far.
1999Base Set
2000Gym Heroes
2004FireRed & LeafGreen
2008Great Encounters
2012Boundaries Crossed
2015Primal Clash
2018Lost Thunder
2023151

















See the full Gym Challenge card list
An ungraded Koga's Tangela from Gym Challenge sells for about $4.49. A PSA 10 is worth more, roughly $58.37 by our estimate, and a PSA 9 around $17.96.
It is a Common, and it shows up about once every 6 Gym Challenge packs.
Atsuko Nishida 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.