Metal Energy is an Energy card. It is listed as Special.
Metal Energy sits at 80/90 in HS—Undaunted, position 80 of 91. Before it is 79 Darkness Energy, and after it is 81 Espeon. The set belongs to the HeartGold & SoulSilver series. It was released on 18 August 2010. The printed size is 90. This checklist is longer, at 91 cards. The listed rarity is Uncommon.
The card text says: Damage done by attacks to the Pokémon that Metal Energy is attached to is reduced by 10 (after applying Weakness and Resistance). Ignore this effect if the Pokémon that Metal Energy is attached to isn't Metal Metal Energy provides Metal Energy. (Doesn't count as a basic Energy card.)
The illustrator line reads Kent Kanetsuna. I count 74 other cards in the catalog with that illustrator.
HS—Undaunted set binder is where a full HS—Undaunted set goes. This card fills one slot there. I still need this card.
Damage done by attacks to the Pokémon that Metal Energy is attached to is reduced by 10 (after applying Weakness and Resistance). Ignore this effect if the Pokémon that Metal Energy is attached to isn't Metal Metal Energy provides Metal Energy. (Doesn't count as a basic Energy card.)
HS—Undaunted, in the HeartGold & SoulSilver series. It was released on 18 August 2010. The printed size is 90.
80/90. It is entry 80 of 91 in this checklist.
Kent Kanetsuna. The catalog lists 74 other cards with that illustrator.
Uncommon.