Metal Energy is an Energy card. It is listed as Special.
Metal Energy sits at 87/95 in Call of Legends, position 87 of 106. Before it is 86 Darkness Energy, and after it is 88 Grass Energy. The set belongs to the HeartGold & SoulSilver series. It was released on 9 February 2011. The printed size is 95. This checklist is longer, at 106 cards. The listed rarity is Uncommon.
The card text says: Damage done by attacks to the Pokémon that Metal Energy 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.
Call of Legends set binder is where a full Call of Legends set goes. This card fills one slot there. I still need this card.