Most played cards in WB Control:

3 Decks
Gerrard's Verdict
12 copies - 4 average
Caves of Koilos
12 copies - 4 average
Swords to Plowshares
12 copies - 4 average
Vindicate
12 copies - 4 average
Duress
12 copies - 4 average
Exalted Angel
11 copies - 3.67 average
Eternal Dragon
8 copies - 2.67 average
Decree of Justice
8 copies - 2.67 average
Disenchant
7 copies - 2.33 average
Engineered Plague
6 copies - 2 average
Skeletal Scrying
6 copies - 2 average
Shared Triumph
4 copies - 1.33 average
Mother of Runes
4 copies - 1.33 average
Mesmeric Fiend
4 copies - 1.33 average
Wrath of God
4 copies - 1.33 average
Aura of Silence
4 copies - 1.33 average
Withered Wretch
4 copies - 1.33 average
Dust Bowl
4 copies - 1.33 average
Paladin en-Vec
3 copies - 1 average
Haunting Echoes
3 copies - 1 average