Tentacruel is card #51 of 101 in Hidden Legends (2004), a Uncommon illustrated by Hisao Nakamura. At about $20.66 it is the #60 most valuable card in the set. In a Hidden Legends booster it turns up about once every 14 packs. It is one of 16 Tentacruel cards printed so far.
1999Fossil
2001Southern Islands
2003Aquapolis
2004Hidden Legends
2006Legend Maker
2008Legends Awakened
2015Primal Clash
2019Unbroken Bonds

















See the full Hidden Legends card list
An ungraded Tentacruel from Hidden Legends sells for about $20.66. A PSA 10 is worth more, roughly $269 by our estimate, and a PSA 9 around $82.64.
It is a Uncommon, and it shows up about once every 14 Hidden Legends packs.
Hisao Nakamura drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Hidden Legends 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.