Hydreigon is card #86 of 114 in Steam Siege (2016), a Rare Holo illustrated by Hideki Ishikawa. At about $0.43 it is the #92 most valuable card in the set. In a Steam Siege booster it turns up about once every 33 packs. It is one of 25 Hydreigon cards printed so far.
2011Noble Victories
2013Legendary Treasures
2015Roaring Skies
2016Steam Siege
2017Crimson Invasion
2019SWSH Black Star Promos
2021Evolving Skies
2024Surging Sparks

















See the full Steam Siege card list
An ungraded Hydreigon from Steam Siege sells for about $0.43. A PSA 10 is worth more, roughly $2.15 by our estimate, and a PSA 9 around $0.99.
It is a Rare Holo, and it shows up about once every 33 Steam Siege packs.
Hideki Ishikawa drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Steam Siege 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.