2, {T}: Put one counter on Color Black Mana Battery. {T}: Add {B} to your mana pool. Remove as many counters as you wish. For each counter removed add {B} to your mana pool. This ability is played as an interrupt.

• Number: 30
• Rarity: U
• Type: Artifact
• Mana cost: 4
• Color: Artifact
• Artist: Anson Maddocks