Koga's Muk is card #26 of 132 in Gym Challenge (2000), a Rare illustrated by Ken Sugimori. At about $16.44 it is the #53 most valuable card in the set. In a Gym Challenge booster it turns up about once every 32 packs. It is one of 32 Muk cards printed so far.
1999Fossil
2000Gym Challenge
2002Legendary Collection
2006Legend Maker
2009Platinum
2013Plasma Freeze
2017Burning Shadows
2022Brilliant Stars

















See the full Gym Challenge card list
An ungraded Koga's Muk from Gym Challenge sells for about $16.44. A PSA 10 is worth more, roughly $214 by our estimate, and a PSA 9 around $65.76.
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.