Walrein is card #39 of 198 in Chilling Reign (2021), a Rare illustrated by Keiichiro Ito. At about $0.30 it is the #150 most valuable card in the set. In a Chilling Reign booster it turns up about once every 35 packs. It is one of 13 Walrein cards printed so far.
2004Team Magma vs Team Aqua
2006Legend Maker
2009Rising Rivals
2012Dragons Exalted
2014Flashfire
2015Double Crisis
2021Chilling Reign
2024Surging Sparks

















See the full Chilling Reign card list
An ungraded Walrein from Chilling Reign sells for about $0.30. A PSA 10 is worth more, roughly $1.05 by our estimate, and a PSA 9 around $0.60.
It is a Rare, and it shows up about once every 35 Chilling Reign packs.
Keiichiro Ito drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Chilling Reign 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.