Most played cards in 4c Midrange:

4 Decks
 ↓ City of Brass
16 copies – 4 avg
↓ Swords to Plowshares
16 copies – 4 avg
↓ Disenchant
16 copies – 4 avg
↓ Mishra's Factory
13 copies – 3.25 avg
↓ Tundra
12 copies – 3 avg
↓ Lightning Bolt
12 copies – 3 avg
↓ Red Elemental Blast
9 copies – 2.25 avg
↓ Counterspell
9 copies – 2.25 avg
↓ Volcanic Island
8 copies – 2 avg
↓ Serra Angel
8 copies – 2 avg
↓ Serendib Efreet
8 copies – 2 avg
↓ Plateau
7 copies – 1.75 avg
↓ Strip Mine
7 copies – 1.75 avg
↓ Divine Offering
6 copies – 1.5 avg
↓ Wrath of God
5 copies – 1.25 avg
↓ Blue Elemental Blast
5 copies – 1.25 avg
↓ Control Magic
5 copies – 1.25 avg
↓ Chain Lightning
5 copies – 1.25 avg
↓ Circle of Protection: Red
4 copies – 1 avg
↓ Mox Ruby
4 copies – 1 avg