Giovanni's Nidoking is card #7 of 132 in Gym Challenge (2000), a Rare Holo illustrated by Ken Sugimori. At about $220 it is the #13 most valuable card in the set. In a Gym Challenge booster it turns up about once every 59 packs. It is one of 22 Nidoking cards printed so far.
1999Base Set
2000Gym Challenge
2002Legendary Collection
2004FireRed & LeafGreen
2007Secret Wonders
2009Rising Rivals
2013Plasma Freeze
2019Team Up

















See the full Gym Challenge card list
An ungraded Giovanni's Nidoking from Gym Challenge sells for about $220. A PSA 10 is worth more, roughly $2,860 by our estimate, and a PSA 9 around $880.
It is a Rare Holo, and it shows up about once every 59 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.