Most played cards in U/W Control:

1 Decks
Nimbus Maze
4 copies - 4 average
Porphyry Nodes
4 copies - 4 average
Teferi's Moat
4 copies - 4 average
Willbender
4 copies - 4 average
Terramorphic Expanse
4 copies - 4 average
Prismatic Lens
4 copies - 4 average
Cancel
4 copies - 4 average
Careful Consideration
4 copies - 4 average
Aven Riftwatcher
4 copies - 4 average
Aeon Chronicler
3 copies - 3 average
Sacred Mesa
3 copies - 3 average
Mystical Teachings
3 copies - 3 average
Take Possession
2 copies - 2 average
Essence Sliver
2 copies - 2 average
Calciform Pools
2 copies - 2 average
Pull from Eternity
2 copies - 2 average
Draining Whelk
1 copies - 1 average
Temporal Isolation
1 copies - 1 average
Venser, Shaper Savant
1 copies - 1 average
Urza's Factory
1 copies - 1 average