Most played cards in UW Control:

1 Decks
Wrath of God
4 copies - 4 average
Mishra's Factory
4 copies - 4 average
Serra Angel
4 copies - 4 average
Control Magic
4 copies - 4 average
Disenchant
4 copies - 4 average
Counterspell
4 copies - 4 average
Swords to Plowshares
4 copies - 4 average
Blue Elemental Blast
3 copies - 3 average
Black Vise
3 copies - 3 average
Jayemdae Tome
3 copies - 3 average
Power Sink
3 copies - 3 average
Force Spike
3 copies - 3 average
Land Tax
2 copies - 2 average
Circle of Protection: Red
2 copies - 2 average
Tundra
2 copies - 2 average
Divine Intervention
2 copies - 2 average
City of Brass
2 copies - 2 average
Armageddon
1 copies - 1 average
Flood
1 copies - 1 average
Maze of Ith
1 copies - 1 average