Gyarados-GX is card #16 of 68 in Hidden Fates (2019), a Rare Holo GX illustrated by 5ban Graphics. At about $7.05 it is the #7 most valuable card in the set. In a Hidden Fates booster it turns up about once every 76 packs. It is one of 57 Gyarados cards printed so far.
1999Base Set
2002Legendary Collection
2006Holon Phantoms
2009Platinum
2013Legendary Treasures
2017Crimson Invasion
2019Team Up
2021Evolving Skies

















See the full Hidden Fates card list
An ungraded Gyarados-GX from Hidden Fates sells for about $7.05. A PSA 10 is worth more, roughly $35.25 by our estimate, and a PSA 9 around $16.21.
It is a Rare Holo GX, and it shows up about once every 76 Hidden Fates packs.
5ban Graphics drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Hidden Fates 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.