Urza, Lord Protector // Urza, Planeswalker (Foil)
Set:
The Brothers' War
Description
'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.