Gyarados is card #8 of 107 in Deoxys (2005), a Rare Holo illustrated by Hisao Nakamura. At about $262 it is the #9 most valuable card in the set. In a Deoxys booster it turns up about once every 46 packs. It is one of 57 Gyarados cards printed so far.
1999Base Set
2002Legendary Collection
2005Deoxys
2006Holon Phantoms
2009Platinum
2013Legendary Treasures
2017Crimson Invasion
2021Evolving Skies

















An ungraded Gyarados from Deoxys sells for about $262. A PSA 10 is worth more, roughly $3,406 by our estimate, and a PSA 9 around $1,048.
It is a Rare Holo, and it shows up about once every 46 Deoxys packs.
Hisao Nakamura drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Deoxys 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.