Most played cards in Rogue:

2 Decks
Jace, the Mind Sculptor
8 copies - 4 average
Oracle of Mul Daya
8 copies - 4 average
Misty Rainforest
8 copies - 4 average
Halimar Depths
7 copies - 3.5 average
Khalni Garden
6 copies - 3 average
Tectonic Edge
6 copies - 3 average
Deprive
4 copies - 2 average
Creeping Tar Pit
4 copies - 2 average
Explore
4 copies - 2 average
Verdant Catacombs
4 copies - 2 average
Smother
4 copies - 2 average
Narcolepsy
4 copies - 2 average
Spell Pierce
4 copies - 2 average
Domestication
4 copies - 2 average
Cancel
4 copies - 2 average
Avenger of Zendikar
4 copies - 2 average
Everflowing Chalice
4 copies - 2 average
Sea Gate Oracle
4 copies - 2 average
Vendetta
3 copies - 1.5 average
Harrow
3 copies - 1.5 average