Delta Species is a set in the EX series. It was released on October 31, 2005. The printed size is 113. This checklist is longer, at 114 cards. Darkness Energy is 103/113, in position 103 of 114 on this checklist. Before it is 102 Switch, and after it is 104 Holon Energy FF. The listed rarity is Rare.
Darkness Energy is an Energy card. It is listed as Special.
Milky Isobe illustrated this card. The same name is on 22 other cards in the catalog.
The card text says: If the Pokémon Darkness Energy is attached to attacks, the attack does 10 more damage to the Active Pokémon (before applying Weakness and Resistance). Ignore this effect unless the Attacking Pokémon is Darkness or has Dark in its name. Darkness Energy provides Darkness Energy. (Doesn't count as a basic Energy card.)
I keep a set binder for Delta Species, meant to hold every card of that set. This card is one slot in the Delta Species set binder. I still need this card.
If the Pokémon Darkness Energy is attached to attacks, the attack does 10 more damage to the Active Pokémon (before applying Weakness and Resistance). Ignore this effect unless the Attacking Pokémon is Darkness or has Dark in its name. Darkness Energy provides Darkness Energy. (Doesn't count as a basic Energy card.)
Delta Species, in the EX series. It was released on October 31, 2005. The printed size is 113.
103/113. It is entry 103 of 114 in this checklist.
Milky Isobe. The catalog lists 22 other cards with that illustrator.
Rare.