Gyarados is card #34 of 108 in Evolutions (2016), a Rare Holo illustrated by Mitsuhiro Arita. At about $8.75 it is the #23 most valuable card in the set. In an Evolutions booster it turns up about once every 47 packs. It is one of 57 Gyarados cards printed so far.
1999Base Set
2002Legendary Collection
2006Holon Phantoms
2009Platinum
2013Legendary Treasures
2016BREAKpoint
2017Crimson Invasion
2021Evolving Skies

















See the full Evolutions card list
An ungraded Gyarados from Evolutions sells for about $8.75. A PSA 10 is worth more, roughly $43.75 by our estimate, and a PSA 9 around $20.12.
It is a Rare Holo, and it shows up about once every 47 Evolutions packs.
Mitsuhiro Arita drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Evolutions 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.