Misty's Poliwag is card #89 of 132 in Gym Challenge (2000), a Common illustrated by Ken Sugimori. At about $4.02 it is the #100 most valuable card in the set. In a Gym Challenge booster it turns up about once every 6 packs. It is one of 19 Poliwag cards printed so far.
1999Base Set
2000Gym Heroes
2001Neo Discovery
2003Skyridge
2005Unseen Forces
2014Furious Fists
2017Sun & Moon
2022Lost Origin

















See the full Gym Challenge card list
An ungraded Misty's Poliwag from Gym Challenge sells for about $4.02. A PSA 10 is worth more, roughly $52.26 by our estimate, and a PSA 9 around $16.08.
It is a Common, and it shows up about once every 6 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.