Most played cards in UB Controlx:

1 Decks
Counterspell
4 copies - 4 average
Dimir Aqueduct
4 copies - 4 average
Dismal Backwater
4 copies - 4 average
Preordain
4 copies - 4 average
Doom Blade
4 copies - 4 average
Sea Gate Oracle
4 copies - 4 average
Mulldrifter
4 copies - 4 average
Chainer's Edict
4 copies - 4 average
Chittering Rats
4 copies - 4 average
Hydroblast
3 copies - 3 average
Disfigure
3 copies - 3 average
Stormbound Geist
2 copies - 2 average
Radiant Fountain
2 copies - 2 average
Archaeomancer
2 copies - 2 average
Ghostly Flicker
2 copies - 2 average
Dispel
2 copies - 2 average
Relic of Progenitus
2 copies - 2 average
Echoing Decay
2 copies - 2 average
Nausea
1 copies - 1 average
Shrivel
1 copies - 1 average