Urza, Lord Protector 225/287 (The Brothers' War)

Artifact, instant, and sorcery spells you cast cost {1} less to cast. {7}: If you both own and control Urza, Lord Protector and an artifact named The Mightstone and Weakstone, exile them, then meld them into Urza, Planeswalker. Activate only as a sorcery.

NM - $19.80
LP - $15.90
MP - $11.90
HP - $8.00
DMG - $4.00