Entei-EX is card #13 of 108 in Dark Explorers (2012), a Rare Holo EX illustrated by Shizurow. At about $49.53 it is the #16 most valuable card in the set. In a Dark Explorers booster it turns up about once every 73 packs. It is one of 33 Entei cards printed so far.
1999Wizards Black Star Promos
2003Aquapolis
2007Secret Wonders
2011Call of Legends
2012Dark Explorers
2017Shining Legends
2019Cosmic Eclipse
2023Crown Zenith

















See the full Dark Explorers card list
An ungraded Entei-EX from Dark Explorers sells for about $49.53. A PSA 10 is worth more, roughly $396 by our estimate, and a PSA 9 around $139.
It is a Rare Holo EX, and it shows up about once every 73 Dark Explorers packs.
Shizurow drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Dark Explorers 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.