Most played cards in Mono White Control:

3 Decks
Snow-Covered Plains
56 copies - 18.67 average
Scrying Sheets
12 copies - 4 average
Swords to Plowshares
12 copies - 4 average
Enlightened Tutor
11 copies - 3.67 average
Sensei's Divining Top
10 copies - 3.33 average
Runed Halo
9 copies - 3 average
Eternal Dragon
9 copies - 3 average
Wrath of God
9 copies - 3 average
Oblivion Ring
8 copies - 2.67 average
Orim's Chant
8 copies - 2.67 average
Decree of Justice
7 copies - 2.33 average
Ray of Distortion
6 copies - 2 average
Story Circle
5 copies - 1.67 average
Tormod's Crypt
5 copies - 1.67 average
Painter's Servant
4 copies - 1.33 average
Chalice of the Void
4 copies - 1.33 average
Isochron Scepter
4 copies - 1.33 average
Relic of Progenitus
4 copies - 1.33 average
Renewed Faith
4 copies - 1.33 average
Grindstone
4 copies - 1.33 average