Most played cards in U/W Control:

1 Decks
Damping Matrix
4 copies - 4 average
Mana Leak
4 copies - 4 average
Hinder
4 copies - 4 average
Auriok Champion
4 copies - 4 average
Coastal Tower
4 copies - 4 average
Thirst for Knowledge
4 copies - 4 average
Cloudcrest Lake
4 copies - 4 average
Acquire
3 copies - 3 average
Talisman of Progress
3 copies - 3 average
Twincast
3 copies - 3 average
Pristine Angel
3 copies - 3 average
Worship
3 copies - 3 average
Boomerang
3 copies - 3 average
Blinkmoth Nexus
3 copies - 3 average
Reverence
3 copies - 3 average
Condescend
3 copies - 3 average
Rewind
2 copies - 2 average
Quash
2 copies - 2 average
Boseiju, Who Shelters All
2 copies - 2 average
Minamo, School at Water's Edge
1 copies - 1 average