Most played cards in BG Midrange:

1 Decks
Sinkhole
4 copies - 4 average
Bayou
4 copies - 4 average
Elves of Deep Shadow
4 copies - 4 average
Erhnam Djinn
4 copies - 4 average
Ice Storm
4 copies - 4 average
Paralyze
4 copies - 4 average
Crumble
4 copies - 4 average
Hymn to Tourach
4 copies - 4 average
Hypnotic Specter
4 copies - 4 average
Mishra's Factory
3 copies - 3 average
City of Brass
3 copies - 3 average
Sengir Vampire
2 copies - 2 average
Sylvan Library
2 copies - 2 average
Gloom
2 copies - 2 average
Whirling Dervish
2 copies - 2 average
Terror
2 copies - 2 average
Su-Chi
2 copies - 2 average
Dark Heart of the Wood
2 copies - 2 average
Icy Manipulator
1 copies - 1 average
Tsunami
1 copies - 1 average