Koffing is card #112 of 192 in Rebel Clash (2020), a Common illustrated by Kyoko Umemoto. At about $0.28 it is the #182 most valuable card in the set. In a Rebel Clash booster it turns up about once every 11 packs. It is one of 29 Koffing cards printed so far.
1999Base Set
2002Expedition Base Set
2005Deoxys
2009Rising Rivals
2011Call of Legends
2016Evolutions
2020Rebel Clash
2021Shining Fates

















See the full Rebel Clash card list
An ungraded Koffing from Rebel Clash sells for about $0.28. A PSA 10 is worth more, roughly $0.98 by our estimate, and a PSA 9 around $0.56.
It is a Common, and it shows up about once every 11 Rebel Clash packs.
Kyoko Umemoto drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Rebel Clash 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.