Walrein is card #48 of 160 in Primal Clash (2015), a Rare illustrated by Satoshi Shirai. At about $0.64 it is the #127 most valuable card in the set. In a Primal Clash booster it turns up about once every 42 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 Primal Clash card list
An ungraded Walrein from Primal Clash sells for about $0.64. A PSA 10 is worth more, roughly $3.20 by our estimate, and a PSA 9 around $1.47.
It is a Rare, and it shows up about once every 42 Primal Clash packs.
Satoshi Shirai drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Primal Clash 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.