Most played cards in Esper Control:

1 Decks
Underground Sea
4 copies - 4 average
Swords to Plowshares
4 copies - 4 average
Su-Chi
4 copies - 4 average
Serendib Efreet
4 copies - 4 average
Disenchant
4 copies - 4 average
Relic Barrier
3 copies - 3 average
Armageddon
3 copies - 3 average
Winter Orb
3 copies - 3 average
City of Brass
3 copies - 3 average
Icy Manipulator
3 copies - 3 average
Power Sink
2 copies - 2 average
Fellwar Stone
2 copies - 2 average
Maze of Ith
2 copies - 2 average
Tundra
2 copies - 2 average
Circle of Protection: Red
2 copies - 2 average
Scrubland
2 copies - 2 average
The Abyss
2 copies - 2 average
Mishra's Factory
2 copies - 2 average
Nevinyrral's Disk
2 copies - 2 average
Sol Ring
1 copies - 1 average