Most played cards in UWR Midrange:

2 Decks
Lightning Bolt
8 copies - 4 average
Savannah Lions
8 copies - 4 average
Tundra
8 copies - 4 average
Disenchant
8 copies - 4 average
Plateau
8 copies - 4 average
Sedge Troll
8 copies - 4 average
Swords to Plowshares
6 copies - 3 average
Badlands
6 copies - 3 average
Red Elemental Blast
5 copies - 2.5 average
Blue Elemental Blast
4 copies - 2 average
Underground Sea
4 copies - 2 average
Power Sink
4 copies - 2 average
Psionic Blast
4 copies - 2 average
Serendib Efreet
4 copies - 2 average
Black Vise
4 copies - 2 average
Scrubland
3 copies - 1.5 average
Serra Angel
3 copies - 1.5 average
Volcanic Island
3 copies - 1.5 average
Ancestral Recall
2 copies - 1 average
Balance
2 copies - 1 average