Most played cards in B/G Aggro:

2 Decks
Treetop Village
8 copies - 4 average
Kitchen Finks
8 copies - 4 average
Thoughtseize
8 copies - 4 average
Tarmogoyf
8 copies - 4 average
Twilight Mire
8 copies - 4 average
Verdant Catacombs
8 copies - 4 average
Birds of Paradise
8 copies - 4 average
Putrid Leech
8 copies - 4 average
Maelstrom Pulse
7 copies - 3.5 average
Primal Command
6 copies - 3 average
Damnation
6 copies - 3 average
Great Sable Stag
6 copies - 3 average
Profane Command
6 copies - 3 average
Extirpate
6 copies - 3 average
Shriekmaw
5 copies - 2.5 average
Duress
4 copies - 2 average
Doom Blade
4 copies - 2 average
Garruk Wildspeaker
4 copies - 2 average
Mind Shatter
4 copies - 2 average
Inquisition of Kozilek
2 copies - 1 average