Once during your turn (before your attack), if Magneton is your Active Pokémon, you may flip a coin. If heads, choose 2 of your opponent's Pokémon that have Energy cards attached to them. Choose 1 of the Energy cards attached to each of those Pokémon and switch them between the Pokémon. This power can't be used if Magneton is affected by a Special Condition.
Attacks
30Steel Wave
This attack does 10 damage to each of your opponent's Benched Pokémon that are the same type (color) as the Defending Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
How much is Magneton #H16/147 worth?
Magneton #H16/147 is a Rare Holo card from Aquapolis (2003) — today it trades at roughly $135.00 ungraded.
Grading changes the math on this one: a PSA 10 is valued around $7,500.00, roughly 55.6x the raw price, while a PSA 9 sits near $497.64. 531 copies have been graded to date, and 18% 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.