name: Black Mana Battery
originalText: {2}, ocT: Put one charge counter on Black Mana Battery.\nocT: Add {B} to your mana pool and remove as many charge counters as you wish. For each charge counter removed from Black Mana Battery, add {B} to your mana pool. Play this ability as an interrupt.
printings: 4BB, 4ED, LEG, REN
text: {2}, {T}: Put a charge counter on this artifact.\n{T}, Remove any number of charge counters from this artifact: Add {B}, then add an additional {B} for each charge counter removed this way.
type: Artifact