Flip a number of coins equal to the number of Water Energy attached to Tentacruel. For each heads, draw 2 cards.
20Poison Sting
Flip a coin. If heads, the Defending Pokémon is now Paralyzed.
“This Pokémon attacks its prey with its eighty toxin-producing tentacles.”
How much is Tentacruel #10/18 worth?
Right now (November 6, 2026) the going rate for an ungraded Tentacruel #10/18 from Southern Islands is about $60.86.
Grading changes the math on this one: a PSA 10 is valued around $1,040.44, roughly 17.1x the raw price, while a PSA 9 sits near $135.00. 1,023 copies have been graded to date, and 29% of them came back a 10 — worth knowing before you pay grading fees.
These figures come from nightly market-data syncs verified against completed sales. Use the chart above to see the trend before you buy or sell.