Most played cards in Rogue:

14 Decks
Ancient Tomb
39 copies - 2.79 average
Lotus Petal
24 copies - 1.71 average
City of Traitors
21 copies - 1.5 average
Force of Will
20 copies - 1.43 average
Chrome Mox
19 copies - 1.36 average
Swords to Plowshares
18 copies - 1.29 average
Urza's Saga
17 copies - 1.21 average
Brainstorm
16 copies - 1.14 average
Ponder
15 copies - 1.07 average
Chalice of the Void
14 copies - 1 average
Mox Opal
13 copies - 0.93 average
Flooded Strand
12 copies - 0.86 average
White Plume Adventurer
12 copies - 0.86 average
Seasoned Dungeoneer
12 copies - 0.86 average
Polluted Delta
11 copies - 0.79 average
Archon of Emeria
11 copies - 0.79 average
Surgical Extraction
10 copies - 0.71 average
Cavern of Souls
10 copies - 0.71 average
Wasteland
10 copies - 0.71 average
Faerie Macabre
9 copies - 0.64 average