Darkness Energy - 86/95 - Uncommon - Reverse Holo from Call of Legends, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Reverse Holo
• Artist: Kent Kanetsuna
• Card Text:
  If the Pokemon Darkness Energy is attached to attacks, the attack does 10 more damage to the Active Pokemon (before applying Weakness and Resistance). Ignore this effect if the Pokemon that Darkness Energy is attached to isn't Dark. Darkness Energy provides D Energy. (Doesn't count as a basic Energy card.)