Entei is card #10 of 147 in Aquapolis (2003), a Rare illustrated by Atsuko Nishida. At about $104 it is the #53 most valuable card in the set. In an Aquapolis booster it turns up about once every 68 packs. It is one of 33 Entei cards printed so far.
1 copy has been graded by players in Holobrook's grading game. None has come back a 10 yet.
POP 1 is still open for PSA, BGS and CGC: the first player to grade this card a 10 with each company gets a one-of-a-kind POP 1 slab. See the Mint
1999Wizards Black Star Promos
2003Aquapolis
2007Secret Wonders
2011Call of Legends
2017Shining Legends
2019Cosmic Eclipse
2023Crown Zenith
2026Ascended Heroes

















See the full Aquapolis card list
An ungraded Entei from Aquapolis sells for about $104. A PSA 10 is worth more, roughly $1,350 by our estimate, and a PSA 9 around $415.
It is a Rare, and it shows up about once every 68 Aquapolis packs.
Atsuko Nishida drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Aquapolis 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.