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.)
Near Mint - $0.55
Near Mint Reverse Holofoil - $1.85
Lightly Played - $0.50
Lightly Played Reverse Holofoil - $1.75
Moderately Played - $0.45
Moderately Played Reverse Holofoil - $1.55
Heavily Played - $0.40
Heavily Played Reverse Holofoil - $1.40
Damaged - $0.40
Damaged Reverse Holofoil - $1.30