1 Ugin's Labyrinth
1 Urza's Mine
1 Urza's Power Plant
1 Urza's Tower
1 Wastes
1 Trinisphere
1 Ugin, Eye of the Storms
1 Ugin, the Ineffable
1 Ugin, the Spirit Dragon
1 Ugin's Binding
1 Ulamog, the Ceaseless Hunger
1 Ulamog, the Defiler
1 Ulamog, the Infinite Gyre
1 Ultima, Origin of Oblivion
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