The Mightstone and Weakstone [The Brothers' War: Prerelease Promos] UPR166 Set: EX: Deoxys Type: Psychic

Set: EX: Deoxys Type: Psychic Rarity: Rare Retreat cost: Colorless

Set: Secret Lair Drop Series Type: World Enchantment Rarity: Rare Cost: {G} All creatures have haste

Set: Wizards of the Coast: Black Star Promos Type: Lightning Rarity: Promo Retreat cost: Colorless

search your soul and you'll discover the world

Bontu the Glorified can't attack or block unless a creature died under your control this turn

The Mightstone and Weakstone [The Brothers' War: Prerelease Promos] UPR166 Set: EX: Deoxys Type: PsychicSet: 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.)