Darkness Energy is an Energy card. It is listed as Special.
Darkness Energy sits at 158/165 in Expedition Base Set, position 158 of 165. Before it is 157 Switch, and after it is 159 Metal Energy. The set belongs to the E-Card series. It was released on 15 September 2002. The printed size is 165, and the checklist is the same length. The listed rarity is Rare.
The card text says: If the Pokémon Darkness Energy is attached to does damage with an attack (after applying Weakness and Resistance), the attack does 10 more damage. At the end of every turn, put 1 damage counter on the Pokémon Darkness Energy is attached to, unless it's Darkness or has Dark in its name. Darkness Energy provides Darkness Energy. (Doesn't count as a basic Energy card.)
The illustrator line reads Milky Isobe. I count 22 other cards in the catalog with that illustrator.
Expedition Base Set set binder is where a full Expedition Base Set set goes. This card fills one slot there. I still need this card.
If the Pokémon Darkness Energy is attached to does damage with an attack (after applying Weakness and Resistance), the attack does 10 more damage. At the end of every turn, put 1 damage counter on the Pokémon Darkness Energy is attached to, unless it's Darkness or has Dark in its name. Darkness Energy provides Darkness Energy. (Doesn't count as a basic Energy card.)
Expedition Base Set, in the E-Card series. It was released on 15 September 2002. The printed size is 165.
158/165. It is entry 158 of 165 in this checklist.
Milky Isobe. The catalog lists 22 other cards with that illustrator.
Rare.