The Mightstone and Weakstone [The Brothers' War Prerelease Promos] Gamemaster Creatures that share a color

Creatures that share a color with equipped creature get +1/+1

then take this many buttons from the bank

Set: Arabian Nights Type: Artifact Rarity: Rare Cost: {6} {2}

the Tech-Priests Dominus have a prodigious talent and hunger for war

Set: Skyridge Type: Colorless Rarity: Uncommon

The Mightstone and Weakstone [The Brothers' War Prerelease Promos] Gamemaster Creatures that share a colorSet: 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.)