Use any attack from Kingdra ex's Basic Pokémon card or Stage 1 Evolution card. (Kingdra ex doesn't have to pay for that attack's Energy cost.)
50+Hydrocannon
Does 50 damage plus 20 more damage for each Water Energy attached to Kingdra ex but not used to pay for this attack's Energy cost. You can't add more than 40 damage in this way.
How much is Kingdra ex #92/97 worth?
As of November 5, 2026, Kingdra ex #92/97 from Dragon sells for around $82.99 in raw, ungraded condition.
Grading changes the math on this one: a PSA 10 is valued around $7,638.11, roughly 92.0x the raw price, while a PSA 9 sits near $748.93. 1,266 copies have been graded to date, and 10% of them came back a 10 — worth knowing before you pay grading fees.
We update this valuation every night from live market data and verify it against real completed sales — see the chart above for how Kingdra ex has moved over time.