name: Blue Mana Battery
originalText: {2}, ocT: Put one charge counter on Blue Mana Battery.\nocT: Add {U} to your mana pool and remove as many charge counters as you wish. For each charge counter removed from Blue Mana Battery, add {U} 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 {U}, then add an additional {U} for each charge counter removed this way.
type: Artifact