Most played cards in Control Dreams:

2 Decks
Disenchant
8 copies - 4 average
Serra Angel
8 copies - 4 average
Tundra
8 copies - 4 average
City of Brass
8 copies - 4 average
Counterspell
8 copies - 4 average
Millstone
7 copies - 3.5 average
Swords to Plowshares
7 copies - 3.5 average
Copy Artifact
7 copies - 3.5 average
Field of Dreams
6 copies - 3 average
Maze of Ith
5 copies - 2.5 average
Moat
4 copies - 2 average
Serendib Efreet
4 copies - 2 average
Mishra's Factory
3 copies - 1.5 average
Ivory Tower
3 copies - 1.5 average
Time Walk
2 copies - 1 average
Control Magic
2 copies - 1 average
Sol Ring
2 copies - 1 average
Shivan Dragon
2 copies - 1 average
Circle of Protection: Black
2 copies - 1 average
Mox Sapphire
2 copies - 1 average