Damage done by attacks to the Pokémon Metal Energy is attached to is reduced by 10 (after applying Weakness and Resistance). If the Pokémon Metal Energy is attached to isn't Metal, whenever it damages a Pokémon by an attack, reduce that damage by 10 (after applying Weakness and Resistance). Metal Energy provides Metal Energy. (Doesn't count as a basic Energy card.)
Metal Energy #159/165 is a English Pokémon TCG card from the Expedition Base Set set, printed at Rare rarity.
Illustration by Milky Isobe.
Expedition Base Set was released in 2002 as part of the e-Card series.
The Expedition Base Set set page lists every other card in the same expansion in card-number order.