Gyarados is card #20 of 98 in Ancient Origins (2015), a Rare illustrated by Shin Nagasawa. At about $5.52 it is the #32 most valuable card in the set. In an Ancient Origins booster it turns up about once every 22 packs. It is one of 57 Gyarados cards printed so far.
1999Base Set
2002Legendary Collection
2006Holon Phantoms
2009Platinum
2013Legendary Treasures
2015Ancient Origins
2017Crimson Invasion
2021Evolving Skies

















See the full Ancient Origins card list
An ungraded Gyarados from Ancient Origins sells for about $5.52. A PSA 10 is worth more, roughly $27.60 by our estimate, and a PSA 9 around $12.70.
It is a Rare, and it shows up about once every 22 Ancient Origins packs.
Shin Nagasawa drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Ancient Origins 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.