Black Mana Battery

Artifact - (uncommon)

, : Put a charge counter on Black Mana Battery.
, Remove any number of charge counters from Black Mana Battery: Add , then add an additional  for each charge counter removed this way.

Price

tcgplayer 5.27

cardmarket 5.09

cardkingdom 3.49

cardsphere 4.65

manapool 1.99