Black Mana Battery [Fourth Edition] Elk Set: Innistrad Type: Creature —

Set: Innistrad Type: Creature — Human Cleric Rarity: Rare Cost: {1}{B} Morbid — {T}

Set: Commander 2016 Type: Sorcery Rarity: Common Cost: {7}{U} Delve (Each card you exile from your graveyard while casting this spell pays for {1}

where X is the total amount of mana paid this way

enchanted creature gets +1/+1

Set: Eternal Masters Type: Creature — Turtle Rarity: Common Cost: {1}{U} Giant Tortoise gets +0/+3 as long as it's untapped

Black Mana Battery [Fourth Edition] Elk Set: Innistrad Type: Creature —Set: Fourth Edition Type: Artifact Rarity: Rare Cost: {4} {2}, {T}: Put a charge counter on Black Mana Battery. {T}, Remove any number of charge counters from Black Mana Battery: Add {B}, then add an additional {B} for each charge counter removed this way.