Tentacruel is card #73 of 165 in 151 (2023), a Uncommon illustrated by miki kudo. At about $0.31 it is the #152 most valuable card in the set. In a 151 booster it turns up about once every 19 packs. It is one of 16 Tentacruel cards printed so far.
1999Fossil
2001Southern Islands
2003Aquapolis
2006Legend Maker
2008Legends Awakened
2015Primal Clash
2019Unbroken Bonds
2023151

















An ungraded Tentacruel from 151 sells for about $0.31. A PSA 10 is worth more, roughly $1.08 by our estimate, and a PSA 9 around $0.62.
It is a Uncommon, and it shows up about once every 19 151 packs.
miki kudo drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open 151 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.