The Mightstone and Weakstone (The Brothers' War)

When The Mightstone and Weakstone enters, 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.)

NM - $5.00
LP - $4.00
MP - $3.00
HP - $2.00
DMG - $1.50