The Mightstone and WeakstoneCasting Cost: Card Type: Legendary Artifact - PowerstoneCard Text: When The Mightstone and Weakstone enters the battlefield, choose one - - Draw two cards. - Target creature gets -5/-5 until end of turn. : Add . This mana can't be spent to cast nonartifact spells. (Melds with Urza, Lord Protector.)Artist: Ryan Pancoast
: Add 