Most played cards in Keeper:

1 Decks
Grafdigger's Cage
4 copies - 4 average
Mana Drain
4 copies - 4 average
Force of Will
4 copies - 4 average
Jace, the Mind Sculptor
3 copies - 3 average
Ancient Grudge
3 copies - 3 average
Mental Misstep
2 copies - 2 average
Volcanic Island
2 copies - 2 average
Dreadbore
2 copies - 2 average
Underground Sea
2 copies - 2 average
Tundra
2 copies - 2 average
Lightning Bolt
2 copies - 2 average
Mana Confluence
2 copies - 2 average
Mindbreak Trap
2 copies - 2 average
Negate
2 copies - 2 average
City of Brass
2 copies - 2 average
Yawgmoth's Will
1 copies - 1 average
Tinker
1 copies - 1 average
Time Vault
1 copies - 1 average
Time Walk
1 copies - 1 average
Regrowth
1 copies - 1 average