Expedition Base Set · #158
Darkness Energy is a Energy card from the Expedition Base Set expansion of the Pokémon Trading Card Game (card #158, Rare).
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.)
Illustrated by Milky Isobe