The Mightstone and Weakstone [The Brothers' War Prerelease Promos] Gateway 2008 Metal Rarity: Ultra Rare Retreat

Metal Rarity: Ultra Rare Retreat cost: 3

Set: Mirage Type: World Enchantment Rarity: Rare Cost: {2}{R} Creatures with flying can block only creatures with flying

Set: Aether Revolt Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1/+1 counters on it

put a +1/+1 counter on Dirtcowl Wurm

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The Mightstone and Weakstone [The Brothers' War Prerelease Promos] Gateway 2008 Metal Rarity: Ultra Rare RetreatSet: 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.)