Umbreon is card #86 of 90 in HS—Undaunted (2010), a Rare Prime illustrated by Hideaki Hakozaki. At about $668 it is the #1 most valuable card in the set. In a HS—Undaunted booster it turns up about once every 40 packs. It is one of 46 Umbreon cards printed so far.
2001Neo Discovery
2005Delta Species
2010HS—Undaunted
2012Dark Explorers
2017Sun & Moon
2019Unified Minds
2023Obsidian Flames
202630th Celebration

















See the full HS—Undaunted card list
An ungraded Umbreon from HS—Undaunted sells for about $668. A PSA 10 is worth more, roughly $5,342 by our estimate, and a PSA 9 around $1,870.
It is a Rare Prime, and it shows up about once every 40 HS—Undaunted packs.
Hideaki Hakozaki drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open HS—Undaunted 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.