Most played cards in BUG:

6 Decks
Force of Will
24 copies - 4 average
Force of Vigor
23 copies - 3.83 average
Deathrite Shaman
22 copies - 3.67 average
Wasteland
20 copies - 3.33 average
Flusterstorm
19 copies - 3.17 average
Collector Ouphe
19 copies - 3.17 average
Tropical Island
15 copies - 2.5 average
Misty Rainforest
15 copies - 2.5 average
Underground Sea
14 copies - 2.33 average
Verdant Catacombs
13 copies - 2.17 average
Tarmogoyf
11 copies - 1.83 average
The Tabernacle at Pendrell Vale
11 copies - 1.83 average
Leovold, Emissary of Trest
8 copies - 1.33 average
Leyline of the Void
8 copies - 1.33 average
Boseiju, Who Endures
8 copies - 1.33 average
Soul-Guide Lantern
7 copies - 1.17 average
Force of Negation
7 copies - 1.17 average
Assassin's Trophy
7 copies - 1.17 average
Urza's Saga
7 copies - 1.17 average
Mox Jet
6 copies - 1 average