Green Mana Battery (German) - "GruneManabatterie" [Renaissance] SV91 and they are far worse

and they are far worse

Set: Chronicles Type: Legendary Creature — Human Wizard Rarity: Rare Cost: {3}{U}{B} {X}

Set: Theros Promos Type: Creature — Human Soldier Rarity: Uncommon Cost: {W}{W} Heroic — Whenever you cast a spell that targets Phalanx Leader

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)

attach them to this card as material

Green Mana Battery (German) - "GruneManabatterie" [Renaissance] SV91 and they are far worseSet: 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.