Entei is card #20 of 163 in Battle Styles (2021), a Rare Holo illustrated by kodama. At about $0.37 it is the #73 most valuable card in the set. In a Battle Styles booster it turns up about once every 71 packs. It is one of 33 Entei cards printed so far.
1999Wizards Black Star Promos
2003Aquapolis
2007Secret Wonders
2011Call of Legends
2017Shining Legends
2019Cosmic Eclipse
2021Battle Styles
2023Crown Zenith

















See the full Battle Styles card list
An ungraded Entei from Battle Styles sells for about $0.37. A PSA 10 is worth more, roughly $1.29 by our estimate, and a PSA 9 around $0.74.
It is a Rare Holo, and it shows up about once every 71 Battle Styles packs.
kodama drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Battle Styles 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.