Most played cards in Fires:

2 Decks
Wooded Foothills
8 copies - 4 average
Flametongue Kavu
8 copies - 4 average
Karplusan Forest
8 copies - 4 average
Call of the Herd
8 copies - 4 average
Lightning Bolt
8 copies - 4 average
Wasteland
8 copies - 4 average
Fyndhorn Elves
8 copies - 4 average
Fires of Yavimaya
8 copies - 4 average
Blastoderm
8 copies - 4 average
Birds of Paradise
8 copies - 4 average
Firestorm
7 copies - 3.5 average
Saproling Burst
7 copies - 3.5 average
Pyroblast
6 copies - 3 average
Naturalize
6 copies - 3 average
Ravenous Baloth
6 copies - 3 average
River Boa
6 copies - 3 average
Earthquake
5 copies - 2.5 average
Hidden Gibbons
3 copies - 1.5 average
Stone Rain
3 copies - 1.5 average
Tormod's Crypt
2 copies - 1 average