Most played cards in UB Control:

1 Decks
Ghost Quarter
4 copies - 4 average
Serum Visions
4 copies - 4 average
Polluted Delta
4 copies - 4 average
Snapcaster Mage
4 copies - 4 average
Fulminator Mage
4 copies - 4 average
Surgical Extraction
3 copies - 3 average
Misty Rainforest
3 copies - 3 average
Cryptic Command
3 copies - 3 average
Fatal Push
3 copies - 3 average
Ancestral Vision
3 copies - 3 average
Thoughtseize
3 copies - 3 average
Inquisition of Kozilek
3 copies - 3 average
Negate
2 copies - 2 average
Vendilion Clique
2 copies - 2 average
Tasigur, the Golden Fang
2 copies - 2 average
Watery Grave
2 copies - 2 average
Dispel
2 copies - 2 average
Collective Brutality
2 copies - 2 average
Damnation
2 copies - 2 average
Engineered Explosives
2 copies - 2 average