1 Urza's Factory
1 Urza's Mine
1 Urza's Power Plant
1 Urza's Tower
1 Urza's Workshop
1 Howling Mine
1 The Mightstone and Weakstone
1 Urza Assembles the Titans
1 Urza, Lord High Artificer
1 Urza, Lord Protector
1 Urza, Planeswalker
1 Urza, Powerstone Prodigy
1 Urza, Prince of Kroog
1 Urza's Armor
1 Urza's Avenger
1 Urza's Bauble
1 Urza's Blueprints
1 Urza's Chalice
1 Urza's Command
1 Urza's Engine
1 Urza's Filter
1 Urza's Incubator
1 Urza's Miter
1 Urza's Rebuff
1 Urza's Ruinous Blast
1 Urza's Sylex
1 Urza's Tome
Sideboard:
1 Urza, Chief Artificer
1 Urza's Guilt