The Mightstone and Weakstone [The Brothers' War: Prerelease Promos] Black Star Promo Set: Arabian Nights Type: Land

Set: Arabian Nights Type: Land Rarity: Uncommon {T}: Add {C}

you may pay 3 life

Set: Diamond & Pearl: Great Encounters Type: Metal Rarity: Holo Rare Retreat cost: 2

Set: Commander 2011 Type: Enchantment Rarity: Rare Cost: {1}{B}{B}{B} Whenever a creature you control dies

Set: Urza's Destiny Type: Enchantment Rarity: Rare Cost: {1}{B}{B} {B}

The Mightstone and Weakstone [The Brothers' War: Prerelease Promos] Black Star Promo Set: Arabian Nights Type: LandSet: The Brothers' War: Prerelease Promos Type: Legendary Artifact Powerstone Rarity: Rare Cost: {5} When The Mightstone and Weakstone enters the battlefield, choose one Draw two cards. Target creature gets 5 5 until end of turn. {T}: Add {C}{C}. This mana can't be spent to cast nonartifact spells. (Melds with Urza, Lord Protector.)