Green Mana Battery (German) - "GruneManabatterie" [Renaissance] SV91 you can remove all Black

you can remove all Black Feather Counter on this card to have 1 face-up monster your opponent controls lose 700 ATK for each Black Feather Counter

attach them to this card as material

Set: Hidden Arsenal Card type: Effect Monster Rarity: Super Rare Attack: 1100 Defense: 200 When this card was destroyed by battle and sent to the Graveyard

if you link Summon a "Prank-Kids" Link Monster (except during the Damage Step): You can have all monsters your opponent controls lose 500 ATK (even if this card leaves the field)

Green Mana Battery (German) - "GruneManabatterie" [Renaissance] SV91 you can remove all BlackSet: Renaissance Type: Artifact Rarity: Uncommon Cost: {4} {2}, {T}: Put a charge counter on Green Mana Battery. {T}, Remove any number of charge counters from Green Mana Battery: Add {G}, then add an additional {G} for each charge counter removed this way.